| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2021 | 124.02 | 210.5 | 56.84 |
| 2020 | 108.2 | 215.36 | 28.62 |
| 2019 | 38.4 | 46.54 | 31.92 |
| 2018 | 40.95 | 49.58 | 29.83 |
| 2017 | 31.65 | 39.99 | 25.51 |
| 2016 | 27.75 | 34.54 | 24.82 |
| 2015 | 34.96 | 45.82 | 28.26 |
| 2014 | 26 | 32.6 | 22.28 |
| 2013 | 26.91 | 34.56 | 21.32 |
| 2012 | 30.87 | 42.37 | 24.1 |
| 2011 | 51.21 | 63.23 | 36.45 |
| 2010 | 61.64 | 74.68 | 48.58 |