| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 17.59 | 23.29 | 10.25 |
| 2024 | 15.66 | 24.22 | 11.6 |
| 2023 | 23.7 | 34.97 | 16.88 |
| 2022 | 48.01 | 74.59 | 32.94 |
| 2021 | 57.31 | 92.38 | 46.44 |
| 2020 | 10.9 | 43.85 | 1.01 |
| 2019 | 1.54 | 4.17 | 0.92 |
| 2018 | 3.86 | 5.43 | 1.4 |
| 2017 | 5.61 | 8.47 | 4.08 |
| 2016 | 6.32 | 8.09 | 5.05 |
| 2015 | 16.78 | 25.68 | 6.85 |
| 2014 | 7.2 | 10.43 | 3.68 |
| 2013 | 3.97 | 5.27 | 3.11 |
| 2012 | 3.73 | 4.74 | 2.79 |
| 2011 | 5.45 | 7.23 | 3.3 |
| 2010 | 6.85 | 8.73 | 4.59 |
| 2009 | 4.5 | 5.51 | 3.44 |