| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.57 | 128 |
| 2015 | 1.44 | 140 |
| 2014 | 2.82 | 107 |
| 2013 | 1.42 | 143 |
| 2012 | 4.31 | 76 |
| 2011 | 7.6 | 31 |
| 2010 | 2.26 | 138 |
| 2009 | -14.72 | 198 |
| 2008 | -5.42 | 196 |
| 2007 | 7.75 | 56 |
| 2006 | 10.27 | 20 |
| 2005 | 9.37 | 23 |
| 2004 | 6.29 | 70 |
| 2003 | 7.42 | 39 |
| 2002 | 6.08 | 33 |
| 2001 | 6.33 | 28 |
| 2000 | 10.57 | 11 |
| 1999 | -.86 | 167 |
| 1998 | 4.12 | 87 |
| 1997 | 11.8 | 9 |
| 1996 | 5.32 | 72 |