| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.14 | 8.61 | 5.97 |
| 2024 | 5.69 | 7.9 | 3.98 |
| 2023 | 6.48 | 7.89 | 5.46 |
| 2022 | 6.84 | 8.91 | 5.04 |
| 2021 | 8.14 | 10.17 | 6.38 |
| 2020 | 9.99 | 17.69 | 7.54 |
| 2019 | 9.97 | 18.16 | 6.31 |
| 2018 | 9.53 | 16.97 | 5.8 |
| 2017 | 25.7 | 48.04 | 13.06 |
| 2016 | 29.3 | 39.92 | 24.34 |
| 2015 | 35.51 | 50.48 | 17.51 |
| 2014 | 14.93 | 23.77 | 11.35 |
| 2013 | 11.72 | 16.67 | 9.15 |
| 2012 | 12.25 | 18.33 | 7.28 |
| 2011 | 26.52 | 43.11 | 17.91 |