| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 14.53 | 18.85 | 11.31 |
| 2024 | 9.24 | 14.09 | 6.3 |
| 2023 | 9.76 | 13.6 | 7.12 |
| 2022 | 6.97 | 8.53 | 5.11 |
| 2021 | 6.34 | 7.44 | 5.22 |
| 2020 | 8.7 | 13.05 | 6.44 |
| 2019 | 6.94 | 11.37 | 5.4 |
| 2018 | 7.78 | 10.94 | 5.59 |
| 2017 | 11.69 | 17.23 | 8.08 |
| 2016 | 22.1 | 31.38 | 14.85 |
| 2015 | 38.18 | 54.63 | 14.82 |
| 2014 | 16.74 | 21.22 | 11.28 |
| 2013 | 6.98 | 11.74 | 5.34 |
| 2012 | 5.26 | 6.36 | 4.36 |