| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 10.76 | 12.29 | 9.66 |
| 2024 | 6.78 | 13.9 | 4.25 |
| 2023 | 6.17 | 7.59 | 5.55 |
| 2022 | 6.84 | 9.91 | 5.38 |
| 2021 | 9.34 | 13.52 | 7.58 |
| 2020 | 9.75 | 12.41 | 7.61 |
| 2019 | 8.85 | 14.1 | 5.66 |
| 2018 | 8.1 | 11.82 | 5.66 |
| 2017 | 13.16 | 16.73 | 10.23 |
| 2016 | 16.07 | 24.76 | 10.12 |
| 2015 | 13.2 | 22.11 | 8.2 |
| 2014 | 11.24 | 13.89 | 8.09 |
| 2013 | 6.96 | 8.87 | 5.28 |
| 2012 | 6.9 | 10.24 | 4.09 |
| 2011 | 10.06 | 14.34 | 7.38 |