| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2026 | 5.29 | 5.81 | 4.99 |
| 2025 | 7.85 | 13.23 | 5.05 |
| 2024 | 6.86 | 14.37 | 3.98 |
| 2023 | 11.84 | 18.57 | 7.34 |
| 2022 | 17.37 | 26.51 | 9.1 |
| 2021 | 14.47 | 30.31 | 5.49 |
| 2020 | 8.2 | 13.36 | 4.63 |
| 2019 | 7.39 | 11.24 | 4.91 |
| 2018 | 11.94 | 17.58 | 6.18 |
| 2017 | 17.35 | 21.22 | 15.01 |
| 2016 | 18.83 | 24.08 | 12.46 |
| 2015 | 17.58 | 34.8 | 9.48 |
| 2014 | 9.13 | 11.47 | 6.89 |
| 2013 | 8.03 | 10.69 | 4.55 |
| 2012 | 4.38 | 5.54 | 3.51 |
| 2011 | 6.79 | 10.04 | 4.57 |