| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 5.54 | 15.64 | 2.64 |
| 2018 | 11.84 | 14.78 | 8.98 |
| 2017 | 0.00 | -5.85 | |
| 2016 | 74.55 | 157.8 | 37.03 |
| 2015 | 0.00 | -4.23 | |
| 2014 | 0.00 | -6.87 | |
| 2013 | 416.56 | 1403.34 | 28.91 |
| 2012 | 0.00 | -8.17 | |
| 2011 | 107.36 | 216.09 | 72.47 |
| 2010 | 0.00 | -13.43 | |
| 2009 | 190.82 | 414.96 | 12.42 |
| 2008 | 29.76 | 56.45 | 8.6 |
| 2007 | 33.23 | 84.1 | 15.69 |
| 2006 | 36.29 | 57.96 | 8.07 |
| 2005 | 11.23 | 18.24 | 7.32 |
| 2004 | 25.43 | 45.69 | 16.95 |