| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | -1.69 | 145 |
| 2012 | 1.98 | 99 |
| 2011 | -.82 | 149 |
| 2010 | 0.92 | 91 |
| 2009 | 1 | 101 |
| 2008 | 3.49 | 87 |
| 2007 | 2.59 | 92 |
| 2006 | 1.03 | 112 |
| 2005 | 9.84 | 22 |
| 2004 | 4.38 | 74 |
| 2003 | -1.31 | 126 |
| 2002 | -.8 | 122 |
| 2001 | 2.04 | 85 |
| 2000 | 6.55 | 40 |
| 1999 | 1.87 | 102 |
| 1998 | 3.5 | 65 |
| 1997 | -1.76 | 122 |
| 1996 | 1.97 | 98 |
| 1995 | -.54 | 99 |
| 1994 | -1.1 | 95 |
| 1993 | 3.03 | 51 |
| 1992 | 2.02 | 66 |
| 1991 | 2.46 | 55 |
| 1990 | -1.75 | 83 |
| 1989 | -5.12 | 100 |
| 1988 | 4.64 | 44 |
| 1987 | 3.98 | 41 |
| 1986 | 8.07 | 18 |