| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 3.63 | 3.99 | 2.89 |
| 2024 | 3.27 | 4.12 | 2.44 |
| 2023 | 3.72 | 4.41 | 3.28 |
| 2022 | 4.12 | 6.02 | 3.11 |
| 2021 | 5.38 | 6.89 | 4.48 |
| 2020 | 5.85 | 9.11 | 4.39 |
| 2019 | 5.33 | 6.8 | 4.37 |
| 2018 | 6.77 | 10.54 | 4.49 |
| 2017 | 16.16 | 31.78 | 9.86 |
| 2016 | 13.99 | 24.95 | 8.08 |
| 2015 | 10.29 | 18.62 | 5.65 |
| 2014 | 7.61 | 9.59 | 5.99 |
| 2013 | 5.44 | 11.83 | 3.86 |