| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 3.52 | 3.75 | 3.16 |
| 2023 | 3.69 | 4.17 | 2.99 |
| 2022 | 4.02 | 5.31 | 3.47 |
| 2021 | 4.73 | 5.9 | 3.87 |
| 2020 | 6.42 | 7.54 | 4.96 |
| 2019 | 17.54 | 36.42 | 5.89 |
| 2018 | 15.82 | 22.85 | 11 |
| 2017 | 13.26 | 15.77 | 11.7 |
| 2016 | 10.51 | 14.89 | 7.74 |
| 2015 | 24.99 | 52.27 | 8.63 |
| 2014 | 16.96 | 41.2 | 10.6 |
| 2013 | 14.46 | 17.47 | 11.92 |
| 2012 | 16.52 | 18.19 | 14.39 |