| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.2 | 133 |
| 2015 | -.3 | 153 |
| 2014 | 0.76 | 137 |
| 2013 | 0.62 | 133 |
| 2012 | -.02 | 145 |
| 2011 | 0.68 | 145 |
| 2010 | 1.89 | 116 |
| 2009 | -3.34 | 131 |
| 2008 | 0.99 | 132 |
| 2007 | 3.21 | 120 |
| 2006 | 3.36 | 112 |
| 2005 | 2.38 | 128 |
| 2004 | 2.14 | 139 |
| 2003 | -.69 | 173 |
| 2002 | -.61 | 152 |
| 2001 | 0.81 | 123 |
| 2000 | 3.36 | 88 |
| 1999 | 1.16 | 118 |
| 1998 | 2.64 | 94 |
| 1997 | 2.07 | 113 |
| 1996 | 0.16 | 154 |
| 1995 | -.19 | 142 |
| 1994 | 0.47 | 119 |
| 1993 | -1.03 | 118 |
| 1992 | -1.14 | 115 |
| 1991 | -2.15 | 125 |
| 1990 | 2.62 | 63 |
| 1989 | 3.49 | 51 |
| 1988 | 2.52 | 89 |
| 1987 | 0.95 | 93 |
| 1986 | 1.33 | 92 |