| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 6.3 | 18.69 | 1.27 |
| 2024 | 9.42 | 19.69 | 5.91 |
| 2023 | 13.03 | 16.66 | 11.15 |
| 2022 | 12.13 | 19.23 | 7.55 |
| 2021 | 20.84 | 29.39 | 12.87 |
| 2020 | 27.62 | 36.78 | 20.91 |
| 2019 | 19.16 | 37.66 | 12.54 |
| 2018 | 12.69 | 15.5 | 9.19 |
| 2017 | 18.86 | 33.25 | 10.98 |
| 2016 | 37.01 | 59.92 | 29.22 |
| 2015 | 43.23 | 74.19 | 22.95 |