| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 3.33 | 4.51 | 2.44 |
| 2023 | 8.81 | 15.24 | 4.42 |
| 2022 | 10.63 | 12.44 | 8.55 |
| 2021 | 13.16 | 18.01 | 10.51 |
| 2020 | 17.25 | 27.05 | 12.36 |
| 2019 | 11.06 | 14.21 | 7.44 |
| 2018 | 9.21 | 12.08 | 6.48 |
| 2017 | 6.86 | 8.71 | 5.43 |
| 2016 | 5.94 | 7.6 | 4.54 |
| 2015 | 9.33 | 14.58 | 5.94 |
| 2014 | 7.96 | 11.39 | 6.17 |
| 2013 | 5.48 | 8.04 | 3.52 |
| 2012 | 4.17 | 5.34 | 3.04 |
| 2011 | 5.66 | 6.42 | 4.39 |