| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 24.6 | 31.05 | 21.03 |
| 2024 | 12.66 | 33.31 | 6.68 |
| 2023 | 14.79 | 20.97 | 11.06 |
| 2022 | 15.55 | 23.13 | 8.57 |
| 2021 | 13.68 | 18.15 | 9.49 |
| 2020 | 22.43 | 31.96 | 16.88 |
| 2019 | 16.65 | 27.55 | 8.16 |
| 2018 | 13.3 | 23.99 | 8.02 |
| 2017 | 25.87 | 31.22 | 16.74 |
| 2016 | 25.72 | 37.12 | 16.44 |
| 2015 | 19.73 | 33.67 | 9.76 |
| 2014 | 9.63 | 14.1 | 5.89 |
| 2013 | 4.17 | 7.82 | 3.26 |
| 2012 | 4.48 | 5.79 | 3.32 |
| 2011 | 6.99 | 9.03 | 5.13 |