| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 5.7 | 6.86 | 4.5 |
| 2023 | 10.51 | 17.78 | 6.18 |
| 2022 | 15.62 | 25.1 | 11.16 |
| 2021 | 39.4 | 54.38 | 24.1 |
| 2020 | 27.03 | 47.28 | 16.92 |
| 2019 | 15.43 | 19.84 | 9.14 |
| 2018 | 13.99 | 19.07 | 9.55 |
| 2017 | 10.45 | 12.05 | 8.77 |
| 2016 | 13.76 | 16 | 10.51 |
| 2015 | 20.63 | 34.27 | 12.01 |
| 2014 | 18.32 | 23.18 | 12.28 |
| 2013 | 19.54 | 22.8 | 14.34 |