| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2024 | 1.71 | 2.52 | 1.36 |
| 2023 | 4.08 | 8.92 | 1.63 |
| 2022 | 9.35 | 14.92 | 5.9 |
| 2021 | 20.35 | 29.97 | 14.52 |
| 2020 | 12.72 | 21.46 | 7.87 |
| 2019 | 5.92 | 9.22 | 3.32 |
| 2018 | 4.25 | 5.92 | 2.58 |
| 2017 | 6.53 | 8.42 | 4.89 |
| 2016 | 9.38 | 15.34 | 5.94 |
| 2015 | 7.15 | 11.88 | 4.27 |
| 2014 | 6.53 | 9.53 | 4.46 |
| 2013 | 6.95 | 10.61 | 4.01 |
| 2012 | 5.01 | 6.8 | 3.18 |
| 2011 | 9.83 | 15.03 | 5.86 |
| 2010 | 16.82 | 20.18 | 14.03 |