| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2022 | 2.92 | 3.5870 | 2.5140 |
| 2021 | 3.96 | 4.6410 | 3.4020 |
| 2020 | 3.18 | 4.1350 | 2.1820 |
| 2019 | 1.87 | 2.3480 | 1.3240 |
| 2018 | 1.65 | 1.9520 | 1.3590 |
| 2017 | 1.42 | 1.6540 | 1.2440 |
| 2016 | 1.3 | 1.5570 | 1.1820 |
| 2015 | 1.77 | 2.8400 | 1.2690 |
| 2014 | 1.28 | 1.3920 | 1.1510 |
| 2013 | 1.2 | 1.3360 | 0.9390 |
| 2012 | 0.9 | 1.0080 | 0.7640 |
| 2011 | 0.96 | 1.0300 | 0.8530 |