| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2022 | 6.37 | 7.9586 | 5.4779 |
| 2021 | 7.87 | 8.6431 | 7.3052 |
| 2020 | 5.74 | 7.5946 | 4.1111 |
| 2019 | 3.74 | 4.3396 | 2.6103 |
| 2018 | 3.17 | 3.7508 | 2.5903 |
| 2017 | 2.98 | 3.6789 | 2.6118 |
| 2016 | 2.76 | 3.0442 | 2.2619 |
| 2015 | 2.36 | 3.1211 | 1.6066 |
| 2014 | 1.31 | 1.6150 | 1.1242 |
| 2013 | 1.05 | 1.2083 | 0.8741 |
| 2012 | 0.85 | 0.9307 | 0.7263 |
| 2011 | 1.01 | 1.1201 | 0.8356 |
| 2010 | 1.04 | 1.1611 | 0.9108 |