| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -1.537 | 131 |
| 2015 | 3.848 | 68 |
| 2014 | 7.313 | 22 |
| 2013 | 8.106 | 22 |
| 2012 | 10.484 | 12 |
| 2011 | 6.83 | 42 |
| 2010 | 6.535 | 57 |
| 2009 | 5.317 | 40 |
| 2008 | 4.969 | 72 |
| 2007 | 6.224 | 93 |
| 2006 | 5.548 | 90 |
| 2005 | 5.048 | 88 |
| 2004 | 4.609 | 97 |
| 2003 | 4.581 | 73 |
| 2002 | 7.401 | 25 |
| 2001 | 12.305 | 7 |
| 2000 | 15.759 | 3 |
| 1999 | -9.345 | 156 |
| 1998 | 1.812 | 117 |
| 1997 | -14.186 | 153 |
| 1996 | 3.152 | 90 |
| 1995 | 2.342 | 90 |
| 1994 | -8.165 | 126 |
| 1993 | -3.671 | 120 |
| 1992 | 1.281 | 89 |
| 1991 | 7.486 | 17 |
| 1990 | -1.889 | 96 |
| 1989 | -3.103 | 99 |
| 1988 | -.144 | 98 |
| 1987 | -2.628 | 100 |
| 1986 | -7.098 | 105 |