| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.93 | 34 |
| 2015 | 5.37 | 34 |
| 2014 | 5.87 | 39 |
| 2013 | 3.97 | 84 |
| 2012 | 4.82 | 62 |
| 2011 | 4.88 | 78 |
| 2010 | 4 | 101 |
| 2009 | 3.51 | 46 |
| 2008 | 2.23 | 135 |
| 2007 | 2.29 | 168 |
| 2006 | 4.05 | 139 |
| 2005 | 1.18 | 183 |
| 2004 | 2.12 | 168 |
| 2003 | 4.95 | 78 |
| 2002 | -.92 | 177 |
| 2001 | -1.63 | 181 |
| 2000 | -.78 | 179 |
| 1999 | 2.48 | 124 |
| 1998 | -2.3 | 180 |
| 1997 | 14.38 | 6 |
| 1996 | 8.84 | 23 |
| 1995 | 7.85 | 24 |
| 1994 | 14.98 | 4 |
| 1993 | -15.1 | 174 |
| 1992 | -3.98 | 148 |
| 1991 | -.7 | 133 |
| 1990 | -.24 | 126 |
| 1989 | 4.06 | 77 |
| 1988 | 6.64 | 49 |
| 1987 | 0.51 | 126 |
| 1986 | 1.59 | 118 |