| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -2.91 | 161 |
| 2015 | -1.34 | 163 |
| 2014 | 2.41 | 81 |
| 2013 | 3.33 | 56 |
| 2012 | 3.98 | 46 |
| 2011 | 6.14 | 26 |
| 2010 | 1.84 | 120 |
| 2009 | -1.1 | 91 |
| 2008 | 4.57 | 57 |
| 2007 | 0.48 | 168 |
| 2006 | 2.67 | 131 |
| 2005 | 3.56 | 86 |
| 2004 | 6.45 | 44 |
| 2003 | 1.04 | 139 |
| 2002 | 2.35 | 76 |
| 2001 | 2.2 | 82 |
| 2000 | -.75 | 163 |
| 1999 | -6.54 | 188 |
| 1998 | 1.24 | 122 |
| 1997 | 2.21 | 105 |
| 1996 | -.38 | 163 |
| 1995 | 0.07 | 140 |
| 1994 | 1.97 | 86 |
| 1993 | -.31 | 103 |
| 1992 | -.22 | 99 |
| 1991 | 1.87 | 62 |
| 1990 | 1.24 | 87 |
| 1989 | -1.41 | 128 |
| 1988 | 3.33 | 67 |
| 1987 | -2.69 | 133 |
| 1986 | 0.93 | 98 |