| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2022 | 1.78 | 2.0350 | 1.5036 |
| 2021 | 1.89 | 2.1097 | 1.6853 |
| 2020 | 1.63 | 1.8709 | 1.3589 |
| 2019 | 1.37 | 1.5721 | 1.1538 |
| 2018 | 1.42 | 1.6865 | 1.1251 |
| 2017 | 1.65 | 1.7471 | 1.5063 |
| 2016 | 1.6 | 1.7811 | 1.3723 |
| 2015 | 1.85 | 2.7558 | 1.3439 |
| 2014 | 1.12 | 1.4166 | 0.9616 |
| 2013 | 0.97 | 1.0714 | 0.8721 |
| 2012 | 0.91 | 1.0314 | 0.7586 |
| 2011 | 1.17 | 1.3436 | 0.8699 |
| 2010 | 1.19 | 1.4119 | 0.9551 |
| 2009 | 1.16 | 1.2120 | 1.0900 |