| 时间 | 平均 | 最高 | 最低 |
|---|---|---|---|
| 2020 | 4.97 | 5.67 | 4.38 |
| 2019 | 4.06 | 5.2 | 3.22 |
| 2018 | 5.77 | 11.91 | 3.26 |
| 2017 | 18.97 | 43.68 | 9.03 |
| 2016 | 0 | -3.64 | |
| 2015 | 60.89 | 88.93 | 38.21 |
| 2014 | 0 | -9.37 | |
| 2013 | 0 | -9.11 | |
| 2012 | 45.63 | 83.68 | 6.72 |
| 2011 | 28.56 | 104.07 | 6.89 |
| 2010 | 58.72 | 116.77 | 33.25 |
| 2009 | 26.8 | 63.59 | 5.57 |
| 2008 | 11.24 | 26.43 | 4.06 |
| 2007 | 21.6 | 32.41 | 13.27 |
| 2006 | 11.42 | 16.17 | 5.5 |
| 2005 | 6.62 | 8.79 | 4.73 |
| 2004 | 8.06 | 13.84 | 5.83 |
| 2003 | 13.06 | 20.75 | 10.16 |
| 2002 | 17.14 | 20.14 | 13.32 |
| 2001 | 17.68 | 23.68 | 12.41 |