| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 24.38 | 31.06 | 18.2 |
| 2024 | 14.38 | 35.23 | 6.66 |
| 2023 | 11.61 | 13.96 | 9.93 |
| 2022 | 11.87 | 15.36 | 7.59 |
| 2021 | 17.66 | 31.78 | 10.7 |
| 2020 | 19.78 | 35.53 | 7.4 |
| 2019 | 9.36 | 13.27 | 6.37 |
| 2018 | 8.73 | 11.29 | 6.11 |
| 2017 | 10.97 | 18 | 8.03 |
| 2016 | 16.09 | 22.15 | 11.8 |
| 2015 | 14.44 | 25.04 | 8.57 |
| 2014 | 8.82 | 12.24 | 6.72 |
| 2013 | 5.18 | 8.62 | 4.05 |
| 2012 | 4.99 | 6.9 | 3.64 |
| 2011 | 9.58 | 13.88 | 6.79 |