| Region | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | Average value |
| Beijing | 0.77 | 0.87 | 1.00 | 1.00 | 1.00 | 1.00 | 0.94 |
| Tianjin | 1.00 | 1.00 | 1.00 | 0.94 | 1.00 | 1.00 | 0.99 |
| Hebei | 0.22 | 0.10 | 0.32 | 0.33 | 0.55 | 0.44 | 0.33 |
| Shanxi | 0.18 | 0.33 | 0.95 | 0.44 | 0.39 | 0.34 | 0.44 |
| Liaoning | 0.31 | 0.20 | 0.33 | 0.50 | 0.36 | 0.44 | 0.36 |
| Jilin | 0.13 | 0.20 | 0.61 | 0.38 | 0.82 | 0.88 | 0.50 |
| Heilongjiang | 0.39 | 0.19 | 0.16 | 0.20 | 0.27 | 0.18 | 0.23 |
| Shanghai | 0.52 | 0.48 | 0.54 | 0.65 | 0.57 | 0.46 | 0.54 |
| Jiangsu | 0.68 | 0.53 | 0.51 | 0.77 | 0.73 | 0.61 | 0.64 |
| Zhejiang | 0.58 | 0.45 | 0.48 | 0.52 | 0.57 | 0.50 | 0.52 |
| Anhui | 0.07 | 0.24 | 0.29 | 0.37 | 0.70 | 0.73 | 0.40 |
| Fujian | 1.00 | 0.66 | 0.56 | 0.58 | 0.65 | 0.46 | 0.65 |
| Jiangxi | 0.07 | 0.11 | 0.32 | 0.27 | 0.45 | 0.48 | 0.28 |
| Shandong | 0.51 | 0.37 | 0.49 | 0.63 | 0.47 | 0.37 | 0.47 |
| He’nan | 0.44 | 0.20 | 0.43 | 0.38 | 0.43 | 1.00 | 0.48 |
| Hubei | 0.09 | 0.10 | 0.60 | 0.40 | 0.40 | 0.38 | 0.33 |
| Hu’nan | 0.22 | 0.21 | 0.57 | 0.54 | 0.57 | 0.57 | 0.45 |
| Guangdong | 0.39 | 0.33 | 0.89 | 0.92 | 1.00 | 1.00 | 0.76 |
| Guangxi | 0.21 | 0.16 | 0.27 | 0.30 | 0.63 | 0.69 | 0.38 |
| Chongqing | 0.14 | 0.25 | 0.70 | 1.00 | 0.66 | 0.51 | 0.54 |
| Sichuan | 0.85 | 0.22 | 0.20 | 0.32 | 0.64 | 0.52 | 0.46 |
| Guizhou | 0.13 | 0.22 | 0.36 | 1.00 | 0.82 | 0.60 | 0.52 |
| Yunnan | 1.00 | 1.00 | 1.00 | 0.59 | 0.69 | 1.00 | 0.88 |
| Shanxi | 0.05 | 0.12 | 0.21 | 0.23 | 0.23 | 0.26 | 0.18 |
| Gansu | 0.26 | 0.10 | 0.16 | 0.33 | 0.36 | 0.32 | 0.26 |
| Ningxia | 0.28 | 0.17 | 0.60 | 0.41 | 0.34 | 0.31 | 0.35 |