| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 3.75 | 4.83 | 2.92 |
| 2023 | 6.78 | 10.49 | 3.8 |
| 2022 | 10.14 | 14.49 | 6.3 |
| 2021 | 10.11 | 14.77 | 6.6 |
| 2020 | 6.9 | 11.75 | 4.44 |
| 2019 | 6.35 | 8.43 | 4.95 |
| 2018 | 6.35 | 7.94 | 5.05 |
| 2017 | 10.41 | 13.41 | 7.25 |
| 2016 | 11.18 | 14.16 | 8.7 |
| 2015 | 15.04 | 26.41 | 8.25 |
| 2014 | 10.42 | 14.29 | 7.69 |
| 2013 | 7.74 | 9.18 | 6.73 |
| 2012 | 7.43 | 9.1 | 5.55 |
| 2011 | 10.54 | 13.47 | 7.1 |
| 2010 | 11.52 | 13.8 | 9.01 |