| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.63 | 12.23 | 8.5 |
| 2024 | 6.9 | 15.51 | 3.35 |
| 2023 | 6.56 | 8.53 | 5.3 |
| 2022 | 6.6 | 10.2 | 4.7 |
| 2021 | 4.88 | 9.95 | 2.15 |
| 2020 | 2.94 | 3.95 | 2.18 |
| 2019 | 3.12 | 4.28 | 2.48 |
| 2018 | 4.18 | 6.79 | 2.21 |
| 2017 | 7.42 | 9.33 | 5.62 |
| 2016 | 10.1 | 12.82 | 8.47 |
| 2015 | 13.45 | 22.77 | 6.79 |
| 2014 | 9.71 | 11.64 | 7.27 |
| 2013 | 6.93 | 10.12 | 5.12 |
| 2012 | 6.09 | 7.95 | 4.3 |
| 2011 | 10.39 | 18.41 | 6.56 |