| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1 | 147 |
| 2015 | 1.22 | 145 |
| 2014 | 0.34 | 173 |
| 2013 | 2 | 133 |
| 2012 | 1.5 | 137 |
| 2011 | -.12 | 178 |
| 2010 | 4.19 | 97 |
| 2009 | -5.42 | 175 |
| 2008 | -1.09 | 182 |
| 2007 | 1.65 | 178 |
| 2006 | 1.42 | 187 |
| 2005 | 1.66 | 177 |
| 2004 | 2.2 | 167 |
| 2003 | 1.53 | 156 |
| 2002 | 0.12 | 168 |
| 2001 | 0.41 | 166 |
| 2000 | 2.78 | 141 |
| 1999 | -.25 | 159 |
| 1998 | -1.13 | 173 |
| 1997 | 1.08 | 165 |
| 1996 | 3.1 | 119 |
| 1995 | 2.74 | 120 |
| 1994 | 0.86 | 142 |
| 1993 | 0.17 | 129 |
| 1992 | 0.82 | 112 |
| 1991 | 3.32 | 69 |
| 1990 | 5.57 | 46 |
| 1989 | 5.37 | 47 |
| 1988 | 7.15 | 44 |
| 1987 | 4.11 | 66 |
| 1986 | 2.83 | 93 |