| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 2.42 | 2.71 | 2.12 |
| 2024 | 2.14 | 3.32 | 1.5 |
| 2023 | 2.91 | 5.62 | 1.6 |
| 2022 | 11.42 | 23.38 | 4.93 |
| 2021 | 15.06 | 30.63 | 7.1 |
| 2020 | 4.34 | 9.42 | 2.11 |
| 2019 | 1.82 | 2.26 | 1.54 |
| 2018 | 3.12 | 4.57 | 1.58 |
| 2017 | 4.23 | 5.51 | 3.41 |
| 2016 | 4 | 5.05 | 2.6 |
| 2015 | 4.48 | 6.82 | 2.39 |
| 2014 | 6.57 | 7.82 | 4.38 |
| 2013 | 1.47 | 4.17 | 1.03 |
| 2012 | 1.12 | 1.44 | 0.91 |
| 2011 | 2.12 | 2.86 | 1.1 |
| 2010 | 3.24 | 5.61 | 2.17 |
| 2009 | 4.38 | 5.38 | 3.6 |