Economy

Traditionally an agricultural region, Xinjiang also has large deposits of minerals and oil.Xinjiang's nominal GDP was approximately 932.4 billion RMB (US$140 billion) as of 2015 with an average annual increase of 10.4% for the past four years,[83] due to exploration of the regions abundant reserves of coal, crude oil, and natural gas and the China Western Development policy introduced by the State Council to boost economic development in Western China.[84] Its per capita GDP for 2009 was 19,798 RMB (2,898 USD), with a growth rate of 1.7%.[84] Southern Xinjiang, with 95% non-Han population, has an average per capita income half that of Xinjiang as a whole.

Transport

In 2008, according to the Xinjiang Transportation Network Plan, the government has focused construction on State Road 314, Alar-Hotan Desert Highway, State Road 218, Qingshui River Line-Yining Highway, and State Road 217, as well as other roads.The construction of the first expressway in the mountainous area of Xinjiang began a new stage in its construction on July 24, 2007. The 56 km (35 mi) highway linking Sayram Lake and Guozi Valley in Northern Xinjiang area had cost 2.39 billion yuan. The expressway is designed to improve the speed of national highway 312 in northern Xinjiang. The project started in August 2006 and several stages have been fully operational since March 2007. Over 3,000 construction workers have been involved. The 700 m-long Guozi Valley Cable Bridge over the expressway is now currently being constructed, with the 24 main pile foundations already completed. Highway 312 national highway Xinjiang section, connects Xinjiang with China's east coast, central and western Asia, plus some parts of Europe. It is a key factor in Xinjiang's economic development. The population it covers is around 40% of the overall in Xinjiang, who contribute half of the GDP in the area.The head of the Transport Department was quoted as saying that 24,800,000,000 RMB had been invested into Xinjiang's road network in 2010 alone and, by this time, the roads covered approximately 152,000 km.Xinjiang's rail hub is Ürümqi. To the east, a conventional and a high-speed rail line runs through Turpan and Hami to Lanzhou in Gansu Province. A third outlet to the east connects Hami and Inner Mongolia.To the west, the Northern Xinjiang runs along the northern footslopes of the Tian Shan range through Changji, Shihezi, Kuytun and Jinghe to the Kazakh border at Alashankou, where it links up with the Turkestan-Siberia Railway. Together, the Northern Xinjiang and the Lanzhou-Xinjiang lines form part of the Trans-Eurasian Continental Railway, which extends from Rotterdam, on the North Sea, to Lianyungang, on the East China Sea. The Second Ürümqi-Jinghe Railway provides additional rail transport capacity to Jinghe, from which the Jinghe-Yining-Horgos Railway heads into the Ili River Valley to Yining, Huocheng, and Khorgos, a second rail border crossing with Kazakhstan. The Kuytun-Beitun Railway runs from Kuytun north into the Junggar Basin to Karamay and Beitun, near Altay.In the south, the Southern Xinjiang Line from Turpan runs southwest along the southern footslopes of the Tian Shan into the Tarim Basin, with stops at Yanqi, Korla, Kuqa, Aksu, Maralbexi (Bachu), Artux, and Kashgar. From Kashgar, the Kashgar-Hotan Railway, follows the southern rim of the Tarim to Hotan, with stops at Shule, Akto, Yengisar, Shache (Yarkant), Yecheng (Karghilik), Moyu (Karakax).The Ürümqi-Dzungaria Railway connects Ürümqi with coal fields in the eastern Junggar Basin. The Hami–Lop Nur Railway connects Hami with potassium salt mines in and around Lop Nur.The Golmud-Korla Railway, under construction as of August 2016, would provide an outlet to Qinghai. Railways to Pakistan and Kyrgyzstan have been proposed.

Geography

Xinjiang is the largest political subdivision of China — it accounts for more than one sixth of China's total territory and a quarter of its boundary length. Xinjiang is mostly covered with uninhabitable deserts and dry grasslands, with dotted oases at the foot of Tian Shan, Kunlun Mountains and Altai Mountains. The inhabitable oasis accounts for 9.7% of Xinjiang's total area by 2010.

Demographics

The earliest Tarim mummies, dated to 1800 BC, are of a Caucasoid physical type.[115] East Asian migrants arrived in the eastern portions of the Tarim Basin about 3,000 years ago, while the Uygher peoples arrived after the collapse of the Orkon Uygher Kingdom, based in modern-day Mongolia, around the year 842.[116][117]Muslim Turkic peoples in Xinjiang include Uyghurs, Uzbeks, Kyrgyz, Tatars and the Kazakhs; Muslim Iranian peoples include Pamiris and the Sarikolis/Wakhis (often conflated as Pamiris); and Muslim Sino-Tibetan peoples such as the Hui. Other PRC ethnic groups in the region include Hans, Mongols (Oirats, Daurs, Dongxiangs), Russians, Xibes, and Manchus. Around 70,000 Russian immigrants were living in Xinjiang in 1945.[118]The Han Chinese of Xinjiang arrived at different times, from different directions and social backgrounds: They are descendants of criminals and officials who had been exiled from China proper during the second half of the eighteenth and first half of the 19th centuries; descendants of families of military and civil officers from Hunan, Yunnan, Gansu and Manchuria; descendants of merchants from Shanxi, Tianjin, Hubei and Hunan and descendants of peasants who started immigrating into the region in 1776.[119] Some Uygher scholars claim descent from both the Turkic Uyghers and the pre-Turkic Tocharians (or Tokharians, whose language was Indo-European), and relatively fair-skin, hair and eyes, as well as other so-called 'Caucasoid' physical traits, are not uncommon among them. In general Uyghurs resemble those peoples who live around them in Afghanistan, Kyrgyzstan, Uzbekistan, Kazakhstan, and Pakistan.In 2002, there were 9,632,600 males (growth rate of 1.0%) and 9,419,300 females (growth rate of 2.2%). The population overall growth rate was 1.09%, with 1.63% of birth rate and 0.54% mortality rate.The Qing began a process of settling Han, Hui, and Uyghur settlers into Northern Xinjiang (Dzungaria) starting in the 18th century. At the start of the 19th century, 40 years after the Qing reconquest, there were around 155,000 Han and Hui Chinese in northern Xinjiang and somewhat more than twice that number of Uyghurs in southern Xinjiang.[120] A census of Xinjiang under Qing rule in the early 19th century tabulated ethnic shares of the population as 30% Han and 60% Turkic, while it dramatically shifted to 6% Han and 75% Uyghur in the 1953 census. However, a situation similar to the Qing era-demographics with a large number of Han had been restored by 2000 with 40.57% Han and 45.21% Uyghur.[121] Professor Stanley W. Toops noted that today's demographic situation is similar to that of the early Qing period in Xinjiang.[122] Before 1831, only a few hundred Chinese merchants lived in southern Xinjiang oases (Tarim Basin) and only a few Uyghurs lived in northern Xinjiang (Dzungaria).[123] After 1831 the Qing permitted and encouraged Han Chinese migration into the Tarim basin in southern Xinjiang, although with very little success, and stationed permanent troops on the land there as well.[124] Political killings and expulsions of non Uyghur populations in the uprisings of the 1860s[124] and 1930s saw them experience a sharp decline as a percentage of the total population[125] though they rose once again in the periods of stability following 1880 (which saw Xinjiang increase its population from 1.2 million)[126][127] and 1949. From a low of 7% in 1953, the Han began to return to Xinjiang between then and 1964, where they comprised 33% of the population (54% Uyghur), similarly to Qing times. A decade later, at the beginning of the Chinese economic reform in 1978, the demographic balance was 46% Uyghur and 40% Han;[121] this has not changed drastically until the last census in 2000, with the Uyghur population reduced to 42%.[128] Military personnel are not counted and national minorities are undercounted in the Chinese census, as in most censuses.[129] While some of the shift has be attributed to an increased Han presence,[130] Uyghurs have also emigrated to other parts of China, where their numbers have increased steadily. Uyghur independence activists express concern over the Han population changing the Uyghur character of the region, though the Han and Hui Chinese mostly live in northern Xinjiang Dzungaria, and are separated from areas of historical Uyghur dominance south of the Tian Shan mountains (southwestern Xinjiang), where Uyghurs account for about 90% of the population.[131]In general, Uyghurs are the majority in southwestern Xinjiang, including the prefectures of Kashgar, Khotan, Kizilsu, and Aksu (about 80% of Xinjiang's Uyghurs live in those four prefectures), as well as Turpan prefecture in eastern Xinjiang. Han are the majority in eastern and northern Xinjiang (Dzungaria), including the cities of Ürümqi, Karamay, Shihezi and the prefectures of Changjyi, Bortala, Bayin'gholin, Ili (especially the cities of Kuitun), and Kumul. Kazakhs are mostly concentrated in Ili prefecture in northern Xinjiang. Kazakhs are the majority in the northernmost part of Xinjiang.

History

Nomadic cultures such as the Yuezhi (Rouzhi) are documented in the area of Xinjiang where the first known reference to the Yuezhi was made in 645 BC by the Chinese Guan Zhong in his work Guanzi (管子, Guanzi Essays: 73: 78: 80: 81). He described the Yúshì 禺氏 (or Niúshì 牛氏), as a people from the north-west who supplied jade to the Chinese from the nearby mountains (also known as Yushi) in Gansu.[20] The supply of jade[21] from the Tarim Basin from ancient times is well documented archaeologically: "It is well known that ancient Chinese rulers had a strong attachment to jade. All of the jade items excavated from the tomb of Fuhao of the Shang dynasty, more than 750 pieces, were from Khotan in modern Xinjiang. As early as the mid-first millennium BC, the Yuezhi engaged in the jade trade, of which the major consumers were the rulers of agricultural China."Traversed by the Northern Silk Road,[23] the Tarim and Dzungaria regions were known as the Western Regions. It was inhabited by various peoples, including Indo-European Tocharians in Turfan and Kucha and Indo-Iranian Saka peoples centered around Kashgar and Khotan.[24] At the beginning of the Han dynasty (206 BC–AD 220), the region was subservient to the Xiongnu, a powerful nomadic people based in modern Mongolia. In the 2nd century BC, the Han dynasty made preparations for war when Emperor Wu of Han dispatched the explorer Zhang Qian to explore the mysterious kingdoms to the west and to form an alliance with the Yuezhi people in order to combat the Xiongnu. As a result of these battles, the Chinese controlled the strategic region from the Ordos and Gansu corridor to Lop Nor. They succeeded in separating the Xiongnu from the Qiang peoples to the south, and also gained direct access to the Western Regions. Han China sent Zhang Qian as an envoy to the states in the region, beginning several decades of struggle between the Xiongnu and Han China over dominance of the region, eventually ending in Chinese success. In 60 BC Han China established the Protectorate of the Western Regions (西域都護府) at Wulei (烏壘, near modern Luntai) to oversee the entire region as far west as the Pamir Mountains, which would remain under the influence and suzerainty of the Han dynasty with some interruptions. For instance, it fell out of their control during the civil war against Wang Mang (r. AD 9-23). It was brought back under Han control in AD 91 due to the efforts of the general Ban Chao.The Western Jin dynasty succumbed to successive waves of invasions by nomads from the north at the beginning of the 4th century. The short-lived kingdoms that ruled northwestern China one after the other, including Former Liang, Former Qin, Later Liang, and Western Liáng, all attempted to maintain the protectorate, with varying degrees of success. After the final reunification of northern China under the Northern Wei empire, its protectorate controlled what is now the southeastern region of Xinjiang. Local states such as Shule, Yutian, Guizi and Qiemo controlled the western region, while the central region around Turpan was controlled by Gaochang, remnants of a state (Northern Liang) that once ruled part of what is now Gansu province in northwestern China.During the Tang dynasty, a series of expeditions were conducted against the Western Turkic Khaganate, and their vassals, the oasis states of southern Xinjiang.[25] Campaigns against the oasis states began under Emperor Taizong with the annexation of Gaochang in 640.[26] The nearby kingdom of Karasahr was captured by the Tang in 644 and the kingdom of Kucha was conquered in 649.[27] The Tang Dynasty then established the Protectorate General to Pacify the West (安西都護府) or Anxi Protectorate in 640 to control the region.During the devastating Anshi Rebellion, which nearly led to the destruction of the Tang dynasty, Tibet invaded the Tang on a wide front, from Xinjiang to Yunnan. It occupied the Tang capital of Chang'an in 763 for 16 days, and took control of southern Xinjiang by the end of the century. At the same time, the Uyghur Khaganate took control of northern Xinjiang, as well as much of the rest of Central Asia, including Mongolia.As both Tibet and the Uyghur Khaganate declined in the mid-9th century, the Kara-Khanid Khanate, which was a confederation of Turkic tribes such as the Karluks, Chigils and Yaghmas,[28] took control of western Xinjiang in the 10th century and the 11th century. Meanwhile, after the Uyghur Khaganate in Mongolia had been smashed by the Kirghiz in 840, branches of the Uyghurs established themselves in Qocha (Karakhoja) and Beshbalik, near the modern cities of Turfan and Urumchi. This Uyghur state remained in eastern Xinjiang until the 13th century, though it was subject to foreign overlords during that time. The Kara-Khanids converted to Islam. The Uyghur state in eastern Xinjiang remained Manichaean, but later converted to Buddhism.In 1132, remnants of the Liao dynasty from Manchuria entered Xinjiang, fleeing the rebellion of their neighbors, the Jurchens. They established a new empire, the Qara Khitai, which ruled over both the Kara-Khanid-held and Uyghur-held parts of the Tarim Basin for the next century. Although Khitan and Chinese were the primary languages of administration, the empire also administered in Persian and Uyghur.The historical area of what is modern day Xinjiang consisted of the distinct areas of the Tarim Basin and Dzungaria, and was originally populated by Indo-European Tocharian and Iranic Saka peoples who practiced the Buddhist religion. The area was subjected to Turkification and Islamification at the hands of invading Turkic Muslims. The Turkification was carried out in the 9th and 10th centuries by two different Turkic Kingdoms, the Buddhist Uyghur Kingdom of Qocho and the Muslim Karluk Kara-Khanid Khanate. Halfway in the 10th century the Saka Iranic Buddhist Kingdom of Khotan came under attack by the Turkic Muslim Karakhanid ruler Musa, and in what proved to be a pivotal moment in the Turkification and Islamification of the Tarim Basin, the Karakhanid leader Yusuf Qadir Khan conquered Khotan around 1006.[30]Professor James A. Millward described the original Uyghurs as physically Mongoloid, giving as an example the images in Bezeklik at temple 9 of the Uyghur patrons, until they began to mix with the Tarim Basin's original eastern Iranian inhabitants.[31] The modern Uyghurs are now a mixed hybrid of East Asian Mongoloid and Europoid Caucasian populations.Some Uyghur ultra-nationalist revisionists, worried at the prospect that they are descendants of migrants into Xinjiang and could be seen as invaders and not the indigenous inhabitants, have sought to revise history like Turghun Almas in his book Uyghurlar, claiming that Turkic Uyghurs were always natives of Xinjiang, claiming that the Tocharian Tarim mummies were Uyghurs, and that Uyghur civilization is 6,000 years old and is the origin of all world civilization.After Genghis Khan unified Mongolia and began his advance west, the Uyghur state in the Turpan-Urumchi area offered its allegiance to the Mongols in 1209, contributing taxes and troops to the Mongol imperial effort. In return, the Uyghur rulers retained control of their kingdom. By contrast, Genghis Khan's Mongol Empire conquered the Qara Khitai in 1218. During the era of the Mongol Empire, the Yuan dynasty vied with the Chagatai Khanate for rule over the area, with the latter taking control of most of this region. After the break-up of the Chagatai Khanate into smaller khanates in the mid-14th century, the region fractured and was ruled by numerous Persianized Mongol Khans simultaneously, including the ones of Moghulistan (with the assistance of the local Dughlat Emirs), Uigurstan (later Turpan), and Kashgaria. These leaders engaged in wars with each other and the Timurids of Transoxania to the west and the Oirats to the east, the successor Chagatai regime based in Mongolia and in China. In the 17th century, the Dzungars established an empire over much of the region.The Mongolian Dzungar was the collective identity of several Oirat tribes that formed and maintained one of the last nomadic empires. The Dzungar Khanate covered the area called Dzungaria and stretched from the west end of the Great Wall of China to present-day eastern Kazakhstan, and from present-day northern Kyrgyzstan to southern Siberia. Most of this area was only renamed "Xinjiang" by the Chinese after the fall of the Dzungar Empire. It existed from the early 17th century to the mid-18th century.The Turkic Muslim sedentary people of the Tarim Basin were originally ruled by the Chagatai Khanate while the nomadic Buddhist Oirat Mongol in Dzungaria ruled over the Dzungar Khanate. The Naqshbandi Sufi Khojas, descendants of the Islamic prophet, Muhammad, had replaced the Chagatayid Khans as the ruling authority of the Tarim Basin in the early 17th century. There was a struggle between two factions of Khojas, the Afaqi (White Mountain) faction and the Ishaqi (Black Mountain) faction. The Ishaqi defeated the Afaqi, which resulted in the Afaqi Khoja inviting the 5th Dalai Lama, the leader of the Tibetan Buddhists, to intervene on his behalf in 1677. The 5th Dalai Lama then called upon his Dzungar Buddhist followers in the Dzungar Khanate to act on this invitation. The Dzungar Khanate then conquered the Tarim Basin in 1680, setting up the Afaqi Khoja as their puppet ruler.After being converted to Islam, the descendants of the previously Buddhist Uyghurs in Turfan failed to retain memory of their ancestral legacy and falsely believed that the "infidel Kalmuks" (Dzungars) were the ones who built Buddhist monuments in their area.The Turkic Muslims of the Turfan and Kumul Oases then submitted to the Qing dynasty of China, and asked China to free them from the Dzungars. The Qing accepted the rulers of Turfan and Kumul as Qing vassals. The Qing dynasty waged war against the Dzungars for decades until finally defeating them and then Qing Manchu Bannermen carried out the Dzungar genocide, nearly wiping them from existence and depopulating Dzungaria. The Qing then freed the Afaqi Khoja leader Burhan-ud-din and his brother Khoja Jihan from their imprisonment by the Dzungars, and appointed them to rule as Qing vassals over the Tarim Basin. The Khoja brothers decided to renege on this deal and declare themselves as independent leaders of the Tarim Basin. The Qing and the Turfan leader Emin Khoja crushed their revolt and China then took full control of both Dzungaria and the Tarim Basin by 1759.The Manchu Qing dynasty of China gained control over eastern Xinjiang as a result of a long struggle with the Dzungars that began in the 17th century. In 1755, with the help of the Oirat nobel Amursana, the Qing attacked Ghulja and captured the Dzungar khan. After Amursana's request to be declared Dzungar khan went unanswered, he led a revolt against the Qing. Over the next two years, Qing armies destroyed the remnants of the Dzungar Khanate and many Han Chinese and (Hui) moved into the pacified areas.[37] The native Dzungar Oirat Mongols suffered heavily from the brutal campaigns and a simultaneous smallpox epidemic. One writer, Wei Yuan, described the resulting desolation in what is now northern Xinjiang as: "an empty plain for several thousand li, with no Oirat yurt except those surrendered."[38] It has been estimated that 80% of the 600,000 or more Dzungars were destroyed by a combination of disease and warfare,[39] and it took generations for it to recover.[40]Han and Hui merchants were initially only allowed to trade in the Tarim Basin, while Han and Hui settlement in the Tarim Basin was banned, until the Muhammad Yusuf Khoja invasion, in 1830 when the Qing rewarded the merchants for fighting off Khoja by allowing them to settle down.[41] Robert Michell noted that in 1870 there were many Chinese of all occupations living in Dzungaria and they were well settled in the area, while in Turkestan (Tarim Basin) there were only a few Chinese merchants and soldiers in several garrisons among the Muslim population.[42][43]After reconquering Xinjiang from the Tajik adventurer Yaqub Beg in the late 1870s, the Qing dynasty established Xinjiang ("new frontier") as a province in 1884,[44] formally applying to it the political systems of the rest of China and dropping the old names of Zhunbu (準部, Dzungar region) and Huijiang, "Muslimland."[45][46] After Xinjiang was converted into a province by the Qing, the provincialisation and reconstruction programs initiated by the Qing resulted in the Chinese government helping Uyghurs migrate from southern Xinjiang to other areas of the province, like the area between Qitai and the capital, which was formerly nearly completely inhabited by Han Chinese, and other areas like Ürümqi, Tacheng (Tabarghatai), Yili, Jinghe, Kur Kara Usu, Ruoqiang, Lop Nor, and the Tarim River's lower reaches.[47] It was during Qing times that Uyghurs were settled throughout all of Xinjiang, from their original home cities in the western Tarim Basin.In 1912, the Qing dynasty was replaced by the Republic of China. Yuan Dahua, the last Qing governor of Xinjiang, fled. One of his subordinates, Yang Zengxin, took control of the province and acceded in name to the Republic of China in March of the same year. Through Machiavellian politics and clever balancing of mixed ethnic constituencies, Yang maintained control over Xinjiang until his assassination in 1928 after the Northern Expedition of the Kuomintang.[48]The Kumul Rebellion and other rebellions arose against his successor Jin Shuren in the early 1930s throughout Xinjiang, involving Uyghurs, other Turkic groups, and Hui (Muslim) Chinese. Jin drafted White Russians to crush the revolt. In the Kashgar region on November 12, 1933, the short-lived self-proclaimed First East Turkistan Republic was declared, after some debate over whether the proposed independent state should be called "East Turkestan" or "Uyghuristan".[49][50] The region claimed by the ETR in theory encompassed Kashgar, Khotan and Aqsu prefectures in southwestern Xinjiang.[51] The Chinese Muslim Kuomintang 36th Division (National Revolutionary Army) destroyed the army of the First East Turkestan Republic at the Battle of Kashgar (1934), bringing the Republic to an end after the Chinese Muslims executed the two Emirs of the Republic, Abdullah Bughra and Nur Ahmad Jan Bughra. The Soviet Union invaded the province in the Soviet Invasion of Xinjiang. In the Xinjiang War (1937), the entire province was brought under the control of northeast Manchu warlord Sheng Shicai, who ruled Xinjiang for the next decade with close support from the Soviet Union, many of whose ethnic and security policies Sheng instituted in Xinjiang. The Soviet Union maintained a military base in Xinjiang and had several military and economic advisors deployed in the region. Sheng invited a group of Chinese Communists to Xinjiang, including Mao Zedong's brother Mao Zemin, but in 1943, fearing a conspiracy, Sheng executed them all, including Mao Zemin. In 1944, then the President and Premier of China Chiang Kai-shek, was informed of Shicai's intention of joining the Soviet Union by Soviets, decided to shift him out of Xinjiang to Chongqing as the Minister of Agriculture and Forest.[52] More than one decade of Sheng's era had stopped. However, a short-lived Soviet-backed Second East Turkestan Republic was established in that year, which lasted until 1949 in what is now Ili Kazakh Autonomous Prefecture (Ili, Tarbagatay and Altay Districts) in northern Xinjiang.During the Ili Rebellion the Soviet Union backed Uyghur separatists to form the Second East Turkistan Republic (2nd ETR) in Ili region while the majority of Xinjiang was under Republic of China Kuomintang control.[49] The People's Liberation Army entered Xinjiang in 1949 and the Kuomintang commander Tao Zhiyue surrendered the province to them.[50] Five ETR leaders who were to negotiate with the Chinese over the ETR's sovereignty died in an air crash in 1949 in Soviet airspace over the Kazakh Soviet Socialist Republic.[53]The autonomous region of the PRC was established on October 1, 1955, replacing the province.[50] In 1955 (the first modern census in China was taken in 1953), Uyghurs were counted as 73% of Xinjiang's total population of 5.11 million.[54] Although Xinjiang as a whole is designated as a "Uyghur Autonomous Region", since 1954 more than 50% of Xinjiang's land area are designated autonomous areas for 13 native non-Uyghur groups.[55] The modern Uyghur people experienced ethnogenesis especially from 1955, when the PRC officially recognized that ethnic category - in opposition to the Han - of formerly separately self-identified oasis peoples.[56]Southern Xinjiang is home to the majority of the Uyghur population (about nine million people). The majority of the Han (90%) population of Xinjiang, which is mostly urban, are in Northern Xinjiang.[57][58] This situation has been followed by an imbalance in the economic situation between the two ethnic groups, since the Northern Junghar Basin (Dzungaria) has been more developed than the Uygher south.[59]Since the Chinese economic reform from the late 1970s has exacerbated uneven regional development, more Uyghurs have migrated to Xinjiang cities and some Hans have also migrated to Xinjiang for independent economic advancement. Increased ethnic contact and labor competition coincided with Uyghur separatist terrorism from the 1990s, such as the 1997 Ürümqi bus bombings.[60]In 2000, Uyghurs comprised 45% of Xinjiang's population, but only 13% of Ürümqi's population. Despite having 9% of Xinjiang's population, Ürümqi accounts for 25% of the region's GDP, and many rural Uyghurs have been migrating to that city to seek work in the dominant light, heavy, and petrochemical industries.[61] Hans in Xinjiang are demographically older, better-educated, and work in higher-paying professions than their Uyghur cohabitants. Hans are more likely to cite business reasons for moving to Ürümqi, while some Uyghurs also cite trouble with the law back home and family reasons for their moving to Ürümqi.[62] Hans and Uyghurs are equally represented in Ürümqi's floating population that works mostly in commerce. Self-segregation within the city is widespread, in terms of residential concentration, employment relationships, and a social norm of endogamy.[63] In 2010, Uyghurs constituted a majority in the Tarim Basin, and a mere plurality in Xinjiang as a whole.[64]In recent years, Xinjiang has been a focal point of ethnic and other tensions.[65][66] Recent incidents include the 2007 Xinjiang raid,[67] a thwarted 2008 suicide bombing attempt on a China Southern Airlines flight,[68] and the 2008 Xinjiang attack which resulted in the deaths of sixteen police officers four days before the Beijing Olympics.[69][70]Culturally, Xinjiang maintains 81 public libraries and 23 museums, compared to none of each in 1949, and Xinjiang has 98 newspapers in 44 languages, up from 4 newspapers in 1952. According to official statistics, the ratios of doctors, medical workers, medical clinics, and hospital beds to people surpass the national average, and immunization rates have reached 85%.