| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 2.31 | 3.35 | 1.81 |
| 2023 | 4.69 | 9.2 | 2.3 |
| 2022 | 9.33 | 12.47 | 6.01 |
| 2021 | 15.54 | 25.82 | 10.19 |
| 2020 | 10.88 | 18.49 | 6.48 |
| 2019 | 6.29 | 10.86 | 3.9 |
| 2018 | 4.69 | 7.6 | 3.03 |
| 2017 | 8.05 | 11.21 | 6.19 |
| 2016 | 8.46 | 12.68 | 4.69 |
| 2015 | 9.14 | 15.43 | 5.61 |
| 2014 | 7.78 | 11.14 | 5.82 |
| 2013 | 6.67 | 10.86 | 3.24 |
| 2012 | 3.75 | 4.9 | 2.57 |
| 2011 | 5.36 | 6.24 | 4.01 |
| 2010 | 6.82 | 8.19 | 5.82 |