| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.11 | 15.52 | 3.7 |
| 2024 | 2.14 | 5.23 | 0.84 |
| 2023 | 6.94 | 20.19 | 1.54 |
| 2022 | 16.66 | 25.62 | 7.86 |
| 2021 | 12.23 | 26.46 | 5.87 |
| 2020 | 9.04 | 13.32 | 6.03 |
| 2019 | 8.36 | 11.86 | 6.82 |
| 2018 | 9.21 | 14.63 | 6.32 |
| 2017 | 26.31 | 44.73 | 14.26 |
| 2016 | 37.15 | 48.16 | 26.21 |
| 2015 | 16.74 | 59.59 | 8.97 |
| 2014 | 7.5 | 11.37 | 5.28 |
| 2013 | 5.83 | 9.07 | 4.37 |