Region/Province | 2007 |
| 2010 |
| 2012 |
| |
East China* (Yangtze River Delta) | Zhejiang | 132 | 95 | 142 | 111 | 351 | 236 |
Shanghai | 37 | 31 | 115 | ||||
Central China (includes the middle reaches of the Yangtze River) | Anhui | 188 | 44 | 263 | 63 | 664 | 219 |
Henan | 95 | 121 | 234 | ||||
Hubei | 13 | 19 | 35 | ||||
Jiangxi | 17 | 33 | 82 | ||||
Hunan | 19 | 27 | 94 | ||||
North China | Hebei | 312 | 123 | 391 | 146 | 505 | 168 |
Shandong | 91 | 113 | 101 | ||||
Shanxi | 17 | 33 | 82 | ||||
Beijing | 16 | 12 | 31 | ||||
Tianjin | 29 | 37 | 31 | ||||
Inner Mongolia | 36 | 50 | 92 | ||||
South China | Guangdong | 113 | 87 | 167 | 130 | 189 | 130 |
Fujian | 24 | 33 | 56 | ||||
Hainan | 2 | 4 | 3 | ||||
Northeast China | Liaoning | 69 | 43 | 72 | 47 | 149 | 99 |
Jilin | 16 | 16 | 24 | ||||
Heilongjiang | 10 | 9 | 26 | ||||
Northwest China | Shaanxi | 67 | 30 | 97 | 49 | 85 | 48 |
Gansu | 17 | 26 | 16 | ||||
Qinghai | 3 | 6 | 2 | ||||
Ningxia | 7 | 6 | 7 | ||||
Xinjiang | 10 | 10 | 12 | ||||
Southwest China | Chongqing | 51 | 6 | 76 | 15 | 128 | 26 |
Sichuan | 15 | 27 | 30 | ||||
Guizhou | 7 | 10 | 11 | ||||
Yunnan | 9 | 10 | 33 | ||||
Guangxi | 14 | 14 | 28 | ||||
Xizang | <1 | <1 | <1 |