| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 35.34 | 40.01 | 26.31 |
| 2024 | 33.18 | 47.49 | 23.9 |
| 2023 | 22.22 | 30.22 | 12.06 |
| 2022 | 11.23 | 15.16 | 6.95 |
| 2021 | 12.19 | 15.61 | 9.98 |
| 2020 | 15.13 | 23.28 | 9.66 |
| 2019 | 9.35 | 12.02 | 6.86 |
| 2018 | 8.95 | 12.36 | 6.2 |
| 2017 | 13.06 | 17.18 | 10.46 |
| 2016 | 15.76 | 19.5 | 13.3 |
| 2015 | 20.26 | 26.3 | 13.15 |
| 2014 | 15.82 | 22.18 | 9.23 |
| 2013 | 8.11 | 11.31 | 5.54 |
| 2012 | 9.21 | 15.41 | 4.97 |
| 2011 | 16.76 | 20.68 | 13.51 |
| 2010 | 14.73 | 18.11 | 11.2 |
| 2009 | 10.45 | 16.1 | 7.8 |