| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 11.57 | 15.58 | 9.61 |
| 2024 | 8.39 | 15.8 | 4.79 |
| 2023 | 5.77 | 8.06 | 3.07 |
| 2022 | 3.03 | 4.05 | 1.9 |
| 2021 | 2.91 | 3.53 | 2.53 |
| 2020 | 2.56 | 4.4 | 1.14 |
| 2019 | 1.56 | 1.93 | 1.2 |
| 2018 | 2.02 | 3.07 | 1.18 |
| 2017 | 2.75 | 3.33 | 2.37 |
| 2016 | 3.85 | 5.76 | 3.26 |
| 2015 | 8.06 | 13.2 | 5.46 |
| 2014 | 7.6 | 11.16 | 5.99 |
| 2013 | 8.09 | 15.55 | 4.67 |
| 2012 | 5.38 | 6.13 | 4.25 |
| 2011 | 6.1 | 7.18 | 5.27 |
| 2010 | 7.13 | 7.9 | 6.48 |