| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 28.08 | 34 | 18.13 |
| 2024 | 26.78 | 45.49 | 17.28 |
| 2023 | 12.07 | 38.56 | 6.66 |
| 2022 | 8.06 | 9.58 | 5.53 |
| 2021 | 5.83 | 7.61 | 4.66 |
| 2020 | 6.91 | 8.63 | 5.2 |
| 2019 | 6.57 | 9.61 | 4.65 |
| 2018 | 5.28 | 7.66 | 3.85 |
| 2017 | 9.08 | 14.19 | 5.46 |
| 2016 | 11.3 | 16.69 | 7.78 |
| 2015 | 10.14 | 17.84 | 6.1 |
| 2014 | 6.77 | 8.73 | 5.11 |
| 2013 | 8.37 | 12.34 | 5.61 |
| 2012 | 9.49 | 10.91 | 7.83 |