| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -1.33 | 156 |
| 2015 | -.29 | 152 |
| 2014 | 0.13 | 151 |
| 2013 | 0.94 | 126 |
| 2012 | 0.7 | 126 |
| 2011 | 1.79 | 120 |
| 2010 | 1.58 | 129 |
| 2009 | -2.91 | 124 |
| 2008 | 1.79 | 111 |
| 2007 | 3.96 | 99 |
| 2006 | 4.23 | 90 |
| 2005 | 3.94 | 79 |
| 2004 | 3.26 | 106 |
| 2003 | 1.7 | 126 |
| 2002 | 2.44 | 74 |
| 2001 | 1.79 | 91 |
| 2000 | 2.62 | 110 |
| 1999 | 0.85 | 125 |
| 1998 | -1.01 | 159 |
| 1997 | 0.95 | 137 |
| 1996 | 2.37 | 99 |
| 1995 | 0.95 | 129 |
| 1994 | 0.84 | 110 |
| 1993 | -1.25 | 122 |
| 1992 | -4.55 | 141 |
| 1991 | -3.38 | 139 |
| 1990 | -2.56 | 124 |
| 1989 | 0.2 | 112 |
| 1988 | 2.03 | 97 |
| 1987 | -.06 | 108 |
| 1986 | -2.21 | 129 |