| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.98 | 11.96 | 8.97 |
| 2024 | 7.49 | 12.14 | 4.29 |
| 2023 | 5.11 | 6.3 | 4.37 |
| 2022 | 6.17 | 8.29 | 4.64 |
| 2021 | 7.58 | 15.55 | 3.83 |
| 2020 | 4.52 | 8.26 | 2.48 |
| 2019 | 3.29 | 4.32 | 2.46 |
| 2018 | 3.66 | 5.18 | 2.31 |
| 2017 | 7.84 | 10.98 | 4.77 |
| 2016 | 11.84 | 14.7 | 9.17 |
| 2015 | 11.1 | 21.48 | 2.87 |
| 2014 | 3.66 | 5.16 | 2.87 |
| 2013 | 4.31 | 5.54 | 3.74 |