| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 15.19 | 25.11 | 5.11 |
| 2023 | 13.06 | 30.64 | 4.4 |
| 2022 | 5.26 | 6.67 | 4.01 |
| 2021 | 5.21 | 9.93 | 1.59 |
| 2020 | 1.61 | 2.33 | 0.83 |
| 2019 | 1.54 | 1.95 | 1.2 |
| 2018 | 1.95 | 2.9 | 1.33 |
| 2017 | 3.81 | 5.21 | 2.72 |
| 2016 | 16.52 | 48.77 | 5.04 |
| 2015 | 41.54 | 75.78 | 16.78 |
| 2014 | 8.06 | 26.89 | 3 |
| 2013 | 2.52 | 3.84 | 1.87 |
| 2012 | 2.62 | 3.23 | 1.79 |
| 2011 | 4.22 | 5.69 | 2.62 |
| 2010 | 6.47 | 7.54 | 5.28 |