| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 12.84 | 13.61 | 11.73 |
| 2019 | 19.27 | 27.17 | 12.83 |
| 2018 | 34.95 | 87.14 | 18.62 |
| 2017 | 33.31 | 91.66 | 9.21 |
| 2016 | 7.37 | 9.78 | 6.24 |
| 2015 | 10.62 | 15.37 | 8.3 |
| 2014 | 6.42 | 11.89 | 4.79 |
| 2013 | 23.78 | 73.9 | 5.52 |
| 2012 | 72.22 | 264.2 | 35.53 |
| 2011 | 63.82 | 135.2 | 31.83 |
| 2010 | 30.22 | 45.73 | 23.5 |
| 2009 | 0 | -11.32 | |
| 2008 | 51.71 | 139.84 | 22.73 |
| 2007 | 40.68 | 61.84 | 17.77 |
| 2006 | 16.32 | 21.24 | 12.45 |