| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | 1.34 | 146 |
| 2012 | 5.63 | 47 |
| 2011 | 4.18 | 91 |
| 2010 | -1.49 | 182 |
| 2009 | -3.2 | 145 |
| 2008 | 5.28 | 80 |
| 2007 | 8.75 | 39 |
| 2006 | 9.87 | 24 |
| 2005 | 10.32 | 17 |
| 2004 | 18.29 | 7 |
| 2003 | -7.76 | 200 |
| 2002 | -8.86 | 195 |
| 2001 | 3.39 | 93 |
| 2000 | 3.69 | 125 |
| 1999 | -5.97 | 192 |
| 1998 | 0.29 | 162 |
| 1997 | 6.37 | 48 |
| 1996 | -.2 | 179 |
| 1995 | 3.95 | 99 |
| 1994 | -2.35 | 162 |
| 1993 | 0.28 | 128 |
| 1992 | 6.06 | 45 |
| 1991 | 9.73 | 9 |
| 1990 | 6.47 | 34 |
| 1989 | -8.57 | 161 |
| 1988 | 5.82 | 59 |
| 1987 | 3.58 | 76 |
| 1986 | 6.51 | 36 |