| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.2 | 14.34 | 6.31 |
| 2024 | 7.15 | 10.46 | 5.09 |
| 2023 | 6.22 | 10.42 | 2.74 |
| 2022 | 3.64 | 4.15 | 3.12 |
| 2021 | 4.77 | 6.37 | 3.72 |
| 2020 | 5.76 | 8.19 | 3.79 |
| 2019 | 4.27 | 5.11 | 3.22 |
| 2018 | 5.85 | 13.2 | 2.99 |
| 2017 | 20.34 | 23.14 | 13.2 |
| 2016 | 15.68 | 21.14 | 9.89 |
| 2015 | 6.66 | 14.63 | 4.13 |
| 2014 | 3.41 | 6.24 | 2.02 |
| 2013 | 1.86 | 2.3 | 1.53 |
| 2012 | 1.58 | 1.89 | 1.36 |