| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2013 | -.08 | 149 |
| 2012 | 4.11 | 45 |
| 2011 | 2.64 | 92 |
| 2010 | -2.98 | 184 |
| 2009 | -4.71 | 153 |
| 2008 | 3.6 | 75 |
| 2007 | 6.98 | 45 |
| 2006 | 8.04 | 25 |
| 2005 | 8.44 | 22 |
| 2004 | 16.23 | 6 |
| 2003 | -9.39 | 198 |
| 2002 | -10.51 | 194 |
| 2001 | 1.49 | 103 |
| 2000 | 1.74 | 130 |
| 1999 | -7.77 | 190 |
| 1998 | -1.66 | 166 |
| 1997 | 4.25 | 62 |
| 1996 | -2.23 | 177 |
| 1995 | 1.79 | 105 |
| 1994 | -4.43 | 161 |
| 1993 | -1.91 | 133 |
| 1992 | 3.68 | 44 |
| 1991 | 7.19 | 12 |
| 1990 | 3.93 | 41 |
| 1989 | -10.81 | 160 |
| 1988 | 3.17 | 73 |
| 1987 | 0.95 | 94 |
| 1986 | 3.78 | 38 |