| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 4.63 | 9.23 | 3.41 |
| 2024 | 3.67 | 4.94 | 2.87 |
| 2023 | 6.12 | 7.93 | 4.8 |
| 2022 | 0 | -1.51 | |
| 2021 | 3.41 | 4.36 | 2.39 |
| 2020 | 3.89 | 5.16 | 2.6 |
| 2019 | 5.71 | 9.39 | 2.43 |
| 2018 | 2.83 | 5.57 | 1.31 |
| 2017 | 4.57 | 5.64 | 3.92 |
| 2016 | 3.51 | 4.63 | 2.72 |
| 2015 | 4.41 | 10.01 | 1.84 |
| 2014 | 2.7 | 3.82 | 1.33 |
| 2013 | 1.48 | 1.73 | 1.23 |
| 2012 | 1.76 | 2.26 | 1.36 |
| 2011 | 2.7 | 3.43 | 1.66 |
| 2010 | 9.04 | 10.63 | 6.17 |