| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | 3.34 | 65 |
| 2012 | 6.26 | 44 |
| 2011 | 5.92 | 39 |
| 2010 | 2.14 | 82 |
| 2009 | 1.54 | 117 |
| 2008 | 4.78 | 67 |
| 2007 | 13.75 | 22 |
| 2006 | 9.62 | 25 |
| 2005 | 10.65 | 21 |
| 2004 | 14.22 | 12 |
| 2003 | 5.7 | 38 |
| 2002 | -2.49 | 125 |
| 2001 | 6.93 | 34 |
| 2000 | 4.18 | 48 |
| 1999 | -7.5 | 126 |
| 1998 | -3.06 | 116 |
| 1997 | 58.27 | 4 |
| 1996 | -7.57 | 122 |
| 1995 | 2.57 | 57 |
| 1994 | -5.88 | 106 |
| 1993 | -5.22 | 104 |
| 1992 | -.23 | 77 |
| 1991 | 15.15 | 10 |
| 1990 | 5.02 | 29 |
| 1989 | -2.27 | 84 |
| 1988 | 10.96 | 7 |
| 1987 | 3.38 | 42 |
| 1986 | 5.39 | 29 |