| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | -7.23 | 156 |
| 2014 | -4.77 | 161 |
| 2013 | 21.63 | 5 |
| 2012 | -3.36 | 145 |
| 2011 | 5.27 | 57 |
| 2010 | -5.25 | 146 |
| 2009 | 5.37 | 45 |
| 2008 | 19.43 | 13 |
| 2007 | -.92 | 129 |
| 2006 | -10.31 | 165 |
| 2005 | 1.39 | 98 |
| 2004 | -.91 | 142 |
| 2003 | 3.42 | 68 |
| 2002 | -29.38 | 171 |
| 2001 | 12.94 | 11 |
| 2000 | -4.4 | 135 |
| 1999 | 8.74 | 28 |
| 1998 | 16.86 | 6 |
| 1997 | -1.23 | 118 |
| 1996 | -1.44 | 126 |
| 1995 | -2.23 | 109 |
| 1994 | 0.22 | 83 |
| 1993 | 1.66 | 64 |
| 1992 | 23.91 | 6 |
| 1991 | -27.04 | 127 |
| 1990 | 1.42 | 68 |
| 1989 | -1.21 | 83 |
| 1988 | 3.09 | 56 |
| 1987 | -14.99 | 107 |
| 1986 | 16.35 | 8 |