| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 4.27 | 5.59 | 3.47 |
| 2023 | 4.71 | 5.59 | 3.95 |
| 2022 | 6.7 | 10.98 | 4.79 |
| 2021 | 10.65 | 17.48 | 7.5 |
| 2020 | 14.82 | 19.37 | 10.08 |
| 2019 | 7.23 | 11.02 | 3.78 |
| 2018 | 5.37 | 6.75 | 3.76 |
| 2017 | 5.33 | 7.24 | 3.86 |
| 2016 | 6.05 | 7.62 | 3.79 |
| 2015 | 7.72 | 10.46 | 5.05 |
| 2014 | 8.65 | 11.39 | 4.78 |
| 2013 | 6.26 | 8.18 | 5.05 |
| 2012 | 5.23 | 6.58 | 4.15 |
| 2011 | 5.83 | 7.1 | 4.57 |