| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 14 | 20.8 | 9.59 |
| 2024 | 3.8 | 17.16 | 0.65 |
| 2023 | 3.52 | 6.05 | 2.34 |
| 2022 | 5.07 | 8.68 | 3.09 |
| 2021 | 15.99 | 42.58 | 3.41 |
| 2020 | 37.91 | 48.69 | 28.92 |
| 2019 | 31.62 | 47.73 | 15.28 |
| 2018 | 18.87 | 26.3 | 14.53 |
| 2017 | 18.04 | 21.4 | 12.68 |
| 2016 | 9.78 | 16.82 | 6.27 |
| 2015 | 13.56 | 28.17 | 6.68 |
| 2014 | 6.02 | 9.62 | 3.9 |
| 2013 | 3.27 | 4.81 | 2.39 |
| 2012 | 3.07 | 3.97 | 2.09 |
| 2011 | 4.82 | 6.56 | 3.59 |