| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.92 | 9.96 | 5.73 |
| 2024 | 3.89 | 10.59 | 2.2 |
| 2023 | 3.84 | 5.6 | 2.5 |
| 2022 | 2.63 | 4.12 | 2.05 |
| 2021 | 4.54 | 9.86 | 1.62 |
| 2020 | 3.89 | 9.68 | 1.01 |
| 2019 | 1.22 | 2.05 | 0.39 |
| 2018 | 1.13 | 2.17 | 0.49 |
| 2017 | 3.07 | 4.04 | 1.94 |
| 2016 | 8.47 | 29.27 | 3.9 |
| 2015 | 26.41 | 39.7 | 18.67 |
| 2014 | 12.61 | 27.43 | 3.13 |
| 2013 | 2.49 | 3.13 | 1.88 |
| 2012 | 2.19 | 2.71 | 1.73 |
| 2011 | 3.04 | 3.95 | 1.97 |