| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2023 | 26.87 | 30.07 | 19.49 |
| 2022 | 23.41 | 31.53 | 16.56 |
| 2021 | 24.01 | 29.32 | 16.12 |
| 2020 | 37.45 | 53.14 | 22.75 |
| 2019 | 31.49 | 41.26 | 24.57 |
| 2018 | 54.68 | 73.12 | 27.46 |
| 2017 | 48.79 | 54.34 | 43.56 |
| 2016 | 54.34 | 63.4 | 47.3 |
| 2015 | 65.01 | 99.47 | 45.65 |
| 2014 | 46.57 | 55.07 | 35.14 |
| 2013 | 26.4 | 39.54 | 16.97 |
| 2012 | 20.94 | 26.38 | 14.26 |
| 2011 | 39.3 | 60.92 | 22.25 |
| 2010 | 63.61 | 78.96 | 56.24 |