| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2019 | 31.64 | 49.35 | 19.92 |
| 2018 | 20.50 | 28.16 | 14.61 |
| 2017 | 28.94 | 35.51 | 19.89 |
| 2016 | 73.06 | 113.74 | 28.91 |
| 2015 | 44.19 | 68.6 | 28.25 |
| 2014 | 27.71 | 42.12 | 12.37 |
| 2013 | 20.85 | 130.95 | 12.19 |
| 2012 | 26.54 | 35.76 | 13.07 |
| 2011 | 0.00 | -7.24 | |
| 2010 | 183.01 | 813.61 | 95.84 |
| 2009 | 39.75 | 55.97 | 29.82 |
| 2008 | 37.39 | 111.24 | 6.15 |
| 2007 | 80.96 | 92.51 | 68.68 |
| 2006 | 0.00 | -2.87 | |
| 2005 | 7.73 | 9.29 | 4.72 |
| 2004 | 16.24 | 32.42 | 7.19 |
| 2003 | 45.56 | 68.08 | 17.96 |
| 2002 | 112.56 | 237.08 | 49.2 |