| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 9.42 | 10.83 | 8.35 |
| 2024 | 7.82 | 13.55 | 4.9 |
| 2023 | 10.26 | 13.97 | 8.19 |
| 2022 | 8.83 | 10.88 | 6.98 |
| 2021 | 8.48 | 10.67 | 7.01 |
| 2020 | 9.66 | 12.52 | 7.48 |
| 2019 | 9.81 | 14.29 | 8.52 |
| 2018 | 9.85 | 12.9 | 7.53 |
| 2017 | 15.24 | 20.45 | 12.2 |
| 2016 | 16.53 | 28.09 | 10.61 |
| 2015 | 19.04 | 34.08 | 10.42 |
| 2014 | 9.74 | 17.32 | 6.2 |
| 2013 | 5.57 | 7.09 | 4.64 |
| 2012 | 5.98 | 7.48 | 4.38 |
| 2011 | 8.04 | 11.08 | 5.67 |