| Province | |||||||||
Sichuan | Qinghai | Gansu | Ningxia | Inner Mongolia | Shanxi (SN) | Shaanxi (SX) | Henan | Shandong | ||
Year | 2011 | 76.3 | 0.4 | 4.4 | 0 | 8.2 | 55.7 | 12 | 10.1 | 9.9 |
2012 | 81 | 1.1 | 18.4 | 2.5 | 11.9 | 24.5 | 10.9 | 2.8 | 13.5 | |
2013 | 68.1 | 0.5 | 40.3 | 5.9 | 9.2 | 48.9 | 30.1 | 1.2 | 4.5 | |
2014 | 23.4 | 0.4 | 1.2 | 0.3 | 0.3 | 11.8 | 1 | 0.8 | 0.1 | |
2015 | 14.5 | 0.5 | 0.2 | 0.1 | 0.7 | 2.6 | 0.9 | 0.9 | 0.4 | |
2016 | 8.5 | 0.4 | 2.2 | 0.9 | 0.8 | 3.4 | 19.1 | 13.2 | 0.5 | |
2017 | 5 | 0.1 | 5.2 | 0.4 | 0.9 | 6.1 | 1.9 | 0.6 | 0.6 |