| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 19.46 | 22.01 | 16.38 |
| 2024 | 19.27 | 27.24 | 12.35 |
| 2023 | 40.6 | 60.83 | 23.13 |
| 2022 | 14.33 | 22.99 | 7.51 |
| 2021 | 6.77 | 15.13 | 1.56 |
| 2020 | 3.36 | 4.26 | 2.19 |
| 2019 | 3.74 | 5.35 | 2.96 |
| 2018 | 4.16 | 5.67 | 2.38 |
| 2017 | 6.28 | 6.73 | 5.51 |
| 2016 | 6.03 | 8.41 | 5.09 |
| 2015 | 5.95 | 11.35 | 4.14 |
| 2014 | 4.34 | 5.92 | 3.74 |
| 2013 | 3.57 | 4.19 | 2.74 |
| 2012 | 2.86 | 3.39 | 2.2 |
| 2011 | 3.1 | 3.91 | 2.3 |
| 2010 | 4.25 | 5.54 | 3.72 |