| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 0 | ||
| 2024 | 3.87 | 7.3 | 0.75 |
| 2023 | 8.52 | 11.07 | 5.99 |
| 2022 | 5.52 | 7.3 | 3.99 |
| 2021 | 5.54 | 6.7 | 4.64 |
| 2020 | 6.1 | 8.86 | 3.66 |
| 2019 | 3.89 | 5.34 | 3.15 |
| 2018 | 6.52 | 10.12 | 3.48 |
| 2017 | 10.86 | 12.18 | 9.45 |
| 2016 | 13.81 | 21.07 | 11.11 |
| 2015 | 20.34 | 31.7 | 7.77 |
| 2014 | 6.96 | 9.09 | 5.18 |
| 2013 | 6.53 | 7.72 | 5.47 |
| 2012 | 6.8 | 8.29 | 4.7 |
| 2011 | 9.67 | 12.21 | 7.92 |
| 2010 | 14.07 | 19.34 | 11.77 |