| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 8.36 | 12.41 | 4.93 |
| 2024 | 5.74 | 8.49 | 3.23 |
| 2023 | 7.74 | 11.3 | 3.78 |
| 2022 | 3.99 | 6.28 | 2.93 |
| 2021 | 5.6 | 7.33 | 4.44 |
| 2020 | 7.58 | 11.61 | 5.13 |
| 2019 | 5.29 | 8.27 | 3.85 |
| 2018 | 5.45 | 7.99 | 3.62 |
| 2017 | 10.67 | 12.99 | 7.42 |
| 2016 | 18.67 | 30.68 | 12.52 |
| 2015 | 22.22 | 44.34 | 10.48 |
| 2014 | 13.48 | 17.35 | 10.22 |
| 2013 | 10.16 | 20.99 | 5.74 |
| 2012 | 8.86 | 13.28 | 4.87 |
| 2011 | 11.66 | 18.38 | 8.02 |
| 2010 | 15.17 | 19.67 | 11.28 |
| 2009 | 12.62 | 15.18 | 10.77 |