| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 2.25 | 72 |
| 2015 | 4.31 | 61 |
| 2014 | 4.58 | 65 |
| 2013 | -3.53 | 157 |
| 2012 | -2.87 | 146 |
| 2011 | 4.1 | 91 |
| 2010 | 5.94 | 77 |
| 2009 | -10.13 | 145 |
| 2008 | 6.66 | 46 |
| 2007 | 5.33 | 88 |
| 2006 | 13.62 | 26 |
| 2005 | 10.01 | 30 |
| 2004 | 8.67 | 44 |
| 2003 | 1.69 | 118 |
| 2002 | 3.32 | 89 |
| 2001 | 2.32 | 84 |
| 2000 | 4.33 | 83 |
| 1999 | -.7 | 127 |
| 1998 | -2.52 | 145 |
| 1997 | -5.13 | 147 |
| 1996 | 7.28 | 38 |
| 1995 | 9.55 | 28 |
| 1994 | 0.98 | 99 |