| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 3.08 | 3.88 | 2.39 |
| 2023 | 3.76 | 5.99 | 2.59 |
| 2022 | 4.81 | 9.43 | 3.13 |
| 2021 | 3.27 | 4.6 | 2.5 |
| 2020 | 4.81 | 8.55 | 2.7 |
| 2019 | 2.83 | 3.5 | 2.46 |
| 2018 | 3.81 | 5.1 | 2.56 |
| 2017 | 5.15 | 6.14 | 4.65 |
| 2016 | 5.15 | 5.86 | 4.34 |
| 2015 | 7.07 | 11.62 | 4.78 |
| 2014 | 6.8 | 9.04 | 5.55 |
| 2013 | 8.43 | 11.38 | 6.79 |
| 2012 | 7.82 | 9.09 | 6.32 |