| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2021 | 58.11 | 74.92 | 39.29 |
| 2020 | 45.95 | 67.18 | 27.86 |
| 2019 | 32.42 | 40.46 | 26.11 |
| 2018 | 37.28 | 47.28 | 25.43 |
| 2017 | 1505.65 | 15403.1 | 27.73 |
| 2016 | 345.19 | 679.99 | 118.9 |
| 2015 | 125.44 | 205.42 | 61.41 |
| 2014 | 49.3 | 75.5 | 32.84 |
| 2013 | 32.09 | 48.32 | 26.86 |
| 2012 | 40.73 | 58.59 | 27.7 |
| 2011 | 70.19 | 97.95 | 47.54 |