| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.19 | 8.13 | 5.66 |
| 2024 | 8.14 | 15.64 | 5.65 |
| 2023 | 16.12 | 25.18 | 12.15 |
| 2022 | 22.25 | 27.8 | 16.5 |
| 2021 | 18.22 | 22.27 | 15.03 |
| 2020 | 17.2 | 21.55 | 11.96 |
| 2019 | 12.44 | 19.3 | 7.27 |
| 2018 | 12.36 | 24.94 | 6.85 |
| 2017 | 30.46 | 39.86 | 24.15 |
| 2016 | 33.91 | 45.45 | 20.71 |
| 2015 | 24.45 | 33.07 | 17.58 |