| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2022 | 1.45 | 1.6826 | 1.2433 |
| 2021 | 1.72 | 1.9360 | 1.6220 |
| 2020 | 1.47 | 1.7473 | 1.1890 |
| 2019 | 1.25 | 1.3680 | 0.9930 |
| 2018 | 1.18 | 1.4100 | 1.0010 |
| 2017 | 1.18 | 1.3640 | 1.0640 |
| 2016 | 1.02 | 1.1380 | 0.8960 |
| 2015 | 1.19 | 1.5840 | 0.9300 |
| 2014 | 0.72 | 1.0590 | 0.6340 |
| 2013 | 0.73 | 0.8110 | 0.6470 |
| 2012 | 0.71 | 0.7800 | 0.6220 |
| 2011 | 0.83 | 0.9470 | 0.6650 |
| 2010 | 0.87 | 0.9980 | 0.7140 |
| 2009 | 0.96 | 1.0490 | 0.8520 |