| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 18.23 | 19.51 | 16.81 |
| 2023 | 20.27 | 23.03 | 16.79 |
| 2022 | 21.77 | 31.07 | 15.16 |
| 2021 | 34.95 | 48.27 | 27.36 |
| 2020 | 32.27 | 46.8 | 22.47 |
| 2019 | 27.43 | 36.34 | 19.38 |
| 2018 | 23.27 | 29.67 | 17.01 |
| 2017 | 23.76 | 28.72 | 19.38 |
| 2016 | 26.99 | 33.71 | 20.86 |
| 2015 | 84.63 | 194.55 | 25.58 |
| 2014 | 53.07 | 95.87 | 35.59 |
| 2013 | 46.55 | 97.8 | 12.21 |
| 2012 | 14.24 | 20.52 | 9.94 |
| 2011 | 21.92 | 27.77 | 15.59 |