| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.74 | 164 |
| 2015 | -.92 | 173 |
| 2014 | -1.08 | 174 |
| 2013 | -1.21 | 177 |
| 2012 | -1.3 | 180 |
| 2011 | -1.36 | 176 |
| 2010 | -1.39 | 182 |
| 2009 | -1.41 | 182 |
| 2008 | -1.42 | 185 |
| 2007 | -1.4 | 183 |
| 2006 | -1.37 | 183 |
| 2005 | -1.32 | 179 |
| 2004 | -1.27 | 183 |
| 2003 | -1.18 | 181 |
| 2002 | -1.02 | 179 |
| 2001 | -.84 | 176 |
| 2000 | -1.74 | 190 |
| 1999 | -1.88 | 191 |
| 1998 | -1.68 | 186 |
| 1997 | -1.47 | 186 |
| 1996 | -1.26 | 183 |
| 1995 | -1.05 | 176 |
| 1994 | -.84 | 169 |
| 1993 | -.68 | 168 |
| 1992 | -.62 | 170 |
| 1991 | -.59 | 166 |
| 1990 | 4.57 | 3 |
| 1989 | 6.25 | 3 |
| 1988 | 6.26 | 4 |
| 1987 | 6.26 | 4 |
| 1986 | 6.29 | 2 |