| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.33 | 9.88 | 5.43 |
| 2024 | 3.26 | 8.23 | 2.37 |
| 2023 | 8.32 | 16.68 | 3.43 |
| 2022 | 5.69 | 14.83 | 4.19 |
| 2021 | 2.93 | 11.11 | 2.03 |
| 2020 | 2.89 | 3.56 | 2.48 |
| 2019 | 3.5 | 5.89 | 2.36 |
| 2018 | 3.81 | 5.91 | 2.77 |
| 2017 | 9.15 | 18.68 | 4.37 |
| 2016 | 9.42 | 17.28 | 5.39 |
| 2015 | 8.33 | 17.2 | 5.74 |
| 2014 | 5.33 | 8.04 | 3.27 |
| 2013 | 3.46 | 3.99 | 2.94 |
| 2012 | 3.44 | 4.74 | 2.79 |
| 2011 | 5.39 | 7.97 | 2.94 |
| 2010 | 5.61 | 7.97 | 3.65 |
| 2009 | 4.73 | 6.6 | 3.56 |