| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2025 | 12.25 | 16.49 | 10.18 |
| 2024 | 11.46 | 16.73 | 8.2 |
| 2023 | 12.73 | 18.73 | 5.92 |
| 2022 | 6.44 | 8.35 | 4.96 |
| 2021 | 6.39 | 8.15 | 4.93 |
| 2020 | 6.9 | 11.92 | 3.9 |
| 2019 | 4.24 | 6.39 | 2.55 |
| 2018 | 4.56 | 7.72 | 2.52 |
| 2017 | 7.08 | 8.2 | 5.95 |
| 2016 | 9.52 | 15.55 | 7.59 |
| 2015 | 17.8 | 28.08 | 14.67 |
| 2014 | 17.14 | 21.97 | 13.56 |
| 2013 | 13.86 | 28.45 | 7.14 |
| 2012 | 9.02 | 10.71 | 6.58 |
| 2011 | 9.13 | 12.35 | 7.35 |
| 2010 | 16.07 | 20.72 | 11.9 |