| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 31.00 | 39.68 | 26.56 |
| 2018 | 17.57 | 30.92 | 9.26 |
| 2017 | 17.96 | 22.76 | 12.25 |
| 2016 | 15.19 | 20.82 | 11.12 |
| 2015 | 37.69 | 120.91 | 11.14 |
| 2014 | 27.75 | 84.25 | 10.05 |
| 2013 | 14.01 | 22.31 | 10.58 |
| 2012 | 11.55 | 20.72 | 6.67 |
| 2011 | 12.96 | 19.3 | 6.82 |
| 2010 | 38.01 | 205.68 | 16.78 |
| 2009 | 0.00 | -6.21 | |
| 2008 | 24.63 | 67.88 | 8.1 |
| 2007 | 79.67 | 289.14 | 45.16 |
| 2006 | 0.00 | -4.57 | |
| 2005 | 13.79 | 108.12 | 7.7 |
| 2004 | 56.42 | 1358.37 | 8.78 |