| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.43 | 11.23 | 7.86 |
| 2024 | 9.26 | 15.17 | 6.13 |
| 2023 | 12.54 | 16.07 | 10.15 |
| 2022 | 7.23 | 15.95 | 4.61 |
| 2021 | 8.53 | 12.84 | 5.2 |
| 2020 | 13.9 | 16.98 | 11.38 |
| 2019 | 14.64 | 20.81 | 10.26 |
| 2018 | 23.03 | 34.55 | 11.69 |
| 2017 | 28.49 | 43.16 | 20.97 |
| 2016 | 72.39 | 119.84 | 38.77 |
| 2015 | 107.91 | 204.86 | 39.9 |
| 2014 | 30.23 | 46.53 | 20.7 |
| 2013 | 21.42 | 37.68 | 12.06 |
| 2012 | 13.42 | 16.64 | 10.17 |
| 2011 | 15.95 | 23.26 | 11.12 |
| 2010 | 25.02 | 31.75 | 19.54 |
| 2009 | 20.12 | 27.44 | 13.86 |
| 2008 | 33.31 | 75.79 | 7.92 |
| 2007 | 58.93 | 79.54 | 45.95 |