| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.61 | 10.68 | 8.82 |
| 2024 | 10.56 | 13.71 | 7.4 |
| 2023 | 18.04 | 23.88 | 12.38 |
| 2022 | 9.71 | 16.26 | 6.68 |
| 2021 | 5.57 | 7.55 | 4.29 |
| 2020 | 7.5 | 11.71 | 3.92 |
| 2019 | 3.76 | 6.3 | 1.89 |
| 2018 | 3.15 | 4.56 | 1.98 |
| 2017 | 4.74 | 5.88 | 3.45 |
| 2016 | 6.82 | 9.94 | 4.8 |
| 2015 | 10.86 | 22.82 | 6.45 |
| 2014 | 6.79 | 8.71 | 5.24 |
| 2013 | 5.13 | 8.59 | 2.31 |
| 2012 | 3.16 | 4.59 | 1.84 |
| 2011 | 3.53 | 4.61 | 2.98 |