| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.18 | 3.53 | 2.89 |
| 2024 | 3.02 | 3.82 | 2.34 |
| 2023 | 3.67 | 3.96 | 3.38 |
| 2022 | 3.57 | 5.23 | 2.87 |
| 2021 | 3.61 | 4.23 | 2.85 |
| 2020 | 4.58 | 5.42 | 3.82 |
| 2019 | 5.82 | 7.41 | 4.66 |
| 2018 | 5.4 | 6.24 | 4.69 |
| 2017 | 6.09 | 6.96 | 5.56 |
| 2016 | 6.77 | 9.13 | 5.68 |
| 2015 | 9.42 | 15.8 | 6.07 |
| 2014 | 8.25 | 10.7 | 6.46 |
| 2013 | 6.81 | 9.73 | 5.52 |
| 2012 | 5.85 | 7.12 | 4.96 |
| 2011 | 9.41 | 11.2 | 6.11 |