| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 13.02 | 17.85 | 10.62 |
| 2024 | 8.11 | 14.96 | 4.59 |
| 2023 | 7.77 | 9.97 | 6.29 |
| 2022 | 5.96 | 8.87 | 4.67 |
| 2021 | 3.89 | 5.34 | 3.28 |
| 2020 | 4.61 | 6.37 | 3.26 |
| 2019 | 3.77 | 5.07 | 3.16 |
| 2018 | 4.94 | 7.58 | 3.28 |
| 2017 | 8.49 | 13.81 | 6.21 |
| 2016 | 12.77 | 19.15 | 9.54 |
| 2015 | 22.84 | 48.54 | 9.33 |
| 2014 | 13.61 | 20.46 | 9.58 |
| 2013 | 16.8 | 22.4 | 12.71 |
| 2012 | 14.18 | 17.5 | 11.67 |
| 2011 | 19.78 | 26.59 | 16.35 |