| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 1.66 | 131 |
| 2014 | -.82 | 183 |
| 2013 | -2.96 | 188 |
| 2012 | 1.52 | 136 |
| 2011 | 1.49 | 154 |
| 2010 | 2.71 | 129 |
| 2009 | 1.49 | 83 |
| 2008 | 3.6 | 103 |
| 2007 | 0.6 | 189 |
| 2006 | 7.11 | 62 |
| 2005 | 2.74 | 155 |
| 2004 | 6.73 | 61 |
| 2003 | -.38 | 182 |
| 2002 | -.97 | 179 |
| 2001 | 1.27 | 151 |
| 2000 | 7.1 | 29 |
| 1999 | 1.38 | 142 |
| 1998 | 7.76 | 21 |
| 1997 | 1.47 | 159 |
| 1996 | 1.53 | 156 |
| 1995 | 3.73 | 104 |
| 1994 | 5.92 | 45 |
| 1993 | -5.03 | 159 |
| 1992 | -5.11 | 149 |
| 1991 | -.11 | 123 |
| 1990 | -11.72 | 163 |
| 1989 | 6.66 | 33 |
| 1988 | 5.6 | 66 |
| 1987 | 5.52 | 52 |
| 1986 | 7.1 | 29 |