| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 23.84 | 26.56 | 22.08 |
| 2024 | 18.57 | 34.73 | 14.03 |
| 2023 | 19.04 | 24.94 | 14.16 |
| 2022 | 15.18 | 19 | 12.21 |
| 2021 | 22.45 | 30.27 | 17.22 |
| 2020 | 27.27 | 40.82 | 20.42 |
| 2019 | 24.08 | 44.38 | 11.35 |
| 2018 | 10.96 | 16.36 | 6.9 |
| 2017 | 11.02 | 20.74 | 6.34 |
| 2016 | 25.1 | 30.87 | 20.31 |
| 2015 | 45.17 | 92.62 | 13.84 |
| 2014 | 15.04 | 24.44 | 12.25 |
| 2013 | 17.2 | 28.47 | 12.39 |
| 2012 | 13 | 16.5 | 10.69 |