| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.65 | 11.31 | 6.98 |
| 2024 | 9.07 | 13.83 | 5.79 |
| 2023 | 9.75 | 13.85 | 5.61 |
| 2022 | 9.53 | 17.33 | 5.02 |
| 2021 | 15.84 | 23.49 | 11.21 |
| 2020 | 30.52 | 39.43 | 22.92 |
| 2019 | 17.81 | 31.59 | 12.1 |
| 2018 | 17.34 | 30.74 | 9.87 |
| 2017 | 33.1 | 45.14 | 24.74 |
| 2016 | 34.38 | 47.27 | 21.64 |
| 2015 | 24.08 | 41.64 | 13.4 |
| 2014 | 11.68 | 16.09 | 7.83 |
| 2013 | 7.15 | 9.06 | 5.82 |
| 2012 | 7.03 | 9.82 | 5.4 |
| 2011 | 10.32 | 14.93 | 7.12 |
| 2010 | 8.82 | 10.52 | 6.93 |
| 2009 | 6.94 | 9.96 | 4.47 |
| 2008 | 5.47 | 9.13 | 3.16 |
| 2007 | 7.35 | 9.64 | 5.79 |