| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.32 | 10.33 | 6.8 |
| 2024 | 6.36 | 8.93 | 4.57 |
| 2023 | 7.41 | 9.68 | 6 |
| 2022 | 7.96 | 12.97 | 5.55 |
| 2021 | 18.81 | 78.73 | 9.12 |
| 2020 | 83.93 | 165.09 | 49.13 |
| 2019 | 28.66 | 56.21 | 16.44 |
| 2018 | 23.76 | 35.84 | 16.07 |
| 2017 | 48.1 | 96.1 | 25.37 |
| 2016 | 84.55 | 103.54 | 57.66 |
| 2015 | 82.45 | 165.47 | 38.97 |
| 2014 | 40.82 | 72.88 | 27.74 |
| 2013 | 20.27 | 48.42 | 11.04 |
| 2012 | 11.98 | 14.94 | 9.4 |