| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 5.9 | 8.6 | 4.2 |
| 2023 | 10.74 | 17.86 | 6.96 |
| 2022 | 20.42 | 27.79 | 15.59 |
| 2021 | 31.45 | 45.05 | 22.07 |
| 2020 | 59.2 | 133.5 | 27.78 |
| 2019 | 43 | 55.75 | 34.16 |
| 2018 | 43.86 | 56.46 | 27.54 |
| 2017 | 38.21 | 53.82 | 22.36 |
| 2016 | 18.1 | 25.74 | 14.78 |
| 2015 | 23.64 | 32.35 | 11.04 |
| 2014 | 13.26 | 18.04 | 10.58 |
| 2013 | 13.08 | 15.54 | 11.08 |
| 2012 | 13.96 | 17.54 | 11.16 |
| 2011 | 21.62 | 30.3 | 15.65 |