| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.08 | 10.6 | 8.07 |
| 2024 | 6.17 | 13.5 | 3.64 |
| 2023 | 5.66 | 7.87 | 4.24 |
| 2022 | 5.02 | 6.55 | 4.04 |
| 2021 | 5.27 | 6.99 | 4.17 |
| 2020 | 5.68 | 8.62 | 4 |
| 2019 | 3.25 | 4.44 | 2.19 |
| 2018 | 3.84 | 5.93 | 2.1 |
| 2017 | 5.22 | 6.25 | 4.28 |
| 2016 | 6.65 | 8.21 | 5.45 |
| 2015 | 7.16 | 12.07 | 3.83 |
| 2014 | 5.8 | 7.06 | 4.64 |
| 2013 | 5.99 | 7.24 | 4.82 |
| 2012 | 5.08 | 5.97 | 3.37 |
| 2011 | 5.8 | 8.22 | 3.79 |