|
| Henan | Shanxi | Hunan | Guangdong | Zhejiang | Jiangsu |
| 2017 | 0.011 | 0.010 | 0 | 0 | 0 | 0 |
| 2018 | 0.010 | 0 | 0.010 | 0 | 0.010 | 0.010 |
| 2019 | 0 | 0 | −0.010 | 0 | 0 | 0 |
| 2020 | −0.032 | 0 | −0.010 | 0 | 0 | 0 |