| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 11.23 | 13.52 | 9.96 |
| 2024 | 8.31 | 20.01 | 6.09 |
| 2023 | 11.02 | 14.79 | 8.77 |
| 2022 | 9.53 | 16.04 | 7.23 |
| 2021 | 9.36 | 10.94 | 8.1 |
| 2020 | 9.39 | 10.77 | 7.61 |
| 2019 | 7.47 | 10.57 | 5 |
| 2018 | 5.66 | 8.58 | 3.98 |
| 2017 | 7.14 | 9.34 | 5.93 |
| 2016 | 8.13 | 11.4 | 6.29 |
| 2015 | 9.82 | 17.24 | 5.58 |
| 2014 | 7.21 | 9.65 | 3.95 |
| 2013 | 3.73 | 4.88 | 2.45 |
| 2012 | 10.8 | 22.35 | 3.41 |
| 2011 | 13.05 | 18.35 | 9.74 |
| 2010 | 14.16 | 22.61 | 8.06 |
| 2009 | 7.33 | 9.87 | 4.57 |
| 2008 | 5.8 | 10.44 | 3.02 |