| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.89 | 149 |
| 2015 | -1.76 | 180 |
| 2014 | 4.19 | 71 |
| 2013 | 0.77 | 162 |
| 2012 | -1.07 | 174 |
| 2011 | -.23 | 179 |
| 2010 | 0.67 | 168 |
| 2009 | -1.17 | 117 |
| 2008 | 7.12 | 42 |
| 2007 | 6.32 | 88 |
| 2006 | 2.93 | 158 |
| 2005 | -.09 | 195 |
| 2004 | 3.25 | 149 |
| 2003 | 7.69 | 36 |
| 2002 | -1.75 | 186 |
| 2001 | 0.47 | 165 |
| 2000 | 0.38 | 173 |
| 1999 | 0.68 | 148 |
| 1998 | 4.98 | 58 |
| 1997 | 1.49 | 158 |
| 1996 | 2.64 | 130 |
| 1995 | 1.97 | 142 |
| 1994 | 1.43 | 135 |
| 1993 | 1.68 | 105 |
| 1992 | 2.05 | 86 |
| 1991 | 0.61 | 116 |
| 1990 | 5.25 | 50 |
| 1989 | -.24 | 139 |
| 1988 | 8.56 | 28 |
| 1987 | 7.52 | 31 |
| 1986 | 7.08 | 30 |