| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 6.22 | 7.9 | 4.53 |
| 2023 | 10.25 | 15.39 | 6.96 |
| 2022 | 10.96 | 14.41 | 7.65 |
| 2021 | 18.34 | 23.02 | 13.7 |
| 2020 | 21.41 | 28.68 | 15.12 |
| 2019 | 15.61 | 19.48 | 11.35 |
| 2018 | 12.61 | 15.15 | 10.71 |
| 2017 | 13.61 | 16.15 | 11.7 |
| 2016 | 18.27 | 32.79 | 14.78 |
| 2015 | 32.09 | 63.61 | 17.29 |
| 2014 | 20.93 | 25.98 | 18.05 |
| 2013 | 16.15 | 19.62 | 9.84 |