| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 7.1 | 8.91 | 3.96 |
| 2024 | 3.91 | 5.35 | 3.07 |
| 2023 | 16.46 | 27.04 | 4.17 |
| 2022 | 25.95 | 43.05 | 18.65 |
| 2021 | 26.46 | 35.41 | 17.93 |
| 2020 | 19.93 | 37.31 | 7.46 |
| 2019 | 8.62 | 12.82 | 6.55 |
| 2018 | 7.74 | 10.26 | 5.97 |
| 2017 | 11.12 | 15.62 | 8.03 |
| 2016 | 19.94 | 45.8 | 10.85 |
| 2015 | 40.8 | 103.16 | 8.95 |
| 2014 | 5.79 | 11 | 3.65 |
| 2013 | 4.05 | 5.14 | 3.3 |
| 2012 | 4.65 | 6.74 | 3.29 |
| 2011 | 8.3 | 12.07 | 6.25 |
| 2010 | 10.59 | 12.11 | 8.99 |