| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 9.02 | 24 |
| 2014 | 1.52 | 134 |
| 2013 | -5.7 | 185 |
| 2012 | -5.98 | 185 |
| 2011 | -2.9 | 185 |
| 2010 | -3.91 | 183 |
| 2009 | 2.92 | 98 |
| 2008 | 1.99 | 139 |
| 2007 | -1.48 | 185 |
| 2006 | -.09 | 186 |
| 2005 | -4.62 | 188 |
| 2004 | 11.19 | 15 |
| 2003 | 25.21 | 6 |
| 2002 | 13.95 | 8 |
| 2001 | 24.01 | 4 |
| 2000 | 9.62 | 15 |
| 1999 | 40.17 | 2 |
| 1998 | 17.28 | 7 |
| 1997 | 5.38 | 31 |
| 1996 | 2.4 | 57 |
| 1995 | 9.37 | 12 |
| 1994 | 4.2 | 25 |
| 1993 | 5.72 | 18 |
| 1992 | 5.07 | 12 |
| 1991 | 5.48 | 12 |
| 1990 | -3.34 | 143 |
| 1989 | 1.99 | 35 |
| 1988 | 1.96 | 30 |
| 1987 | 1.78 | 31 |
| 1986 | 3.5 | 13 |