| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 20.23 | 25.47 | 17.16 |
| 2024 | 21.35 | 39.96 | 13.54 |
| 2023 | 35.51 | 40.38 | 29.41 |
| 2022 | 44.73 | 94.45 | 23.21 |
| 2021 | 17.45 | 77.89 | 1.54 |
| 2020 | 1.72 | 2.43 | 1.48 |
| 2019 | 1.81 | 2.53 | 1.43 |
| 2018 | 2.27 | 3.29 | 1.37 |
| 2017 | 4.99 | 7.32 | 3.08 |
| 2016 | 7.62 | 9.66 | 6.31 |
| 2015 | 10.78 | 19.73 | 6.32 |
| 2014 | 5.29 | 7.24 | 3.54 |
| 2013 | 4.31 | 6.35 | 3.38 |
| 2012 | 4.09 | 5.62 | 2 |
| 2011 | 3.71 | 5.43 | 2.32 |
| 2010 | 5.09 | 6.37 | 3.8 |
| 2009 | 4.11 | 6.88 | 1.36 |
| 2008 | 2.89 | 9.4 | 0.97 |