| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 29.65 | 40.2 | 22.35 |
| 2024 | 24.31 | 40.59 | 15.15 |
| 2023 | 29.24 | 54.62 | 13.13 |
| 2022 | 13.97 | 20.36 | 7.34 |
| 2021 | 11.77 | 29.7 | 3.79 |
| 2020 | 4.06 | 10.36 | 1.01 |
| 2019 | 1.11 | 1.6 | 0.54 |
| 2018 | 1.03 | 1.6 | 0.65 |
| 2017 | 2.29 | 2.84 | 1.4 |
| 2016 | 4.05 | 5.88 | 2.56 |
| 2015 | 5.82 | 8.7 | 3.78 |
| 2014 | 5.94 | 9.71 | 3.34 |
| 2013 | 2.36 | 4.51 | 1.5 |
| 2012 | 1.63 | 2.27 | 1.27 |