| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | 0.2 | 135 |
| 2014 | 2.71 | 70 |
| 2013 | 4.2 | 41 |
| 2012 | 1.98 | 83 |
| 2011 | -1 | 172 |
| 2010 | -.36 | 166 |
| 2009 | -3.56 | 133 |
| 2008 | -1.26 | 172 |
| 2007 | 0.19 | 173 |
| 2006 | -1.22 | 187 |
| 2005 | -.35 | 183 |
| 2004 | 0.39 | 173 |
| 2003 | 0.09 | 162 |
| 2002 | -1.69 | 164 |
| 2001 | -2.35 | 172 |
| 2000 | 0.85 | 144 |
| 1999 | 0.56 | 129 |
| 1998 | 1.58 | 119 |
| 1997 | 0.28 | 151 |
| 1996 | 1.42 | 124 |
| 1995 | 1.33 | 121 |
| 1994 | -2.68 | 153 |
| 1993 | 10.11 | 6 |
| 1992 | 3.97 | 40 |
| 1991 | 8.21 | 8 |
| 1990 | 1.31 | 84 |
| 1989 | -2.95 | 139 |
| 1988 | 3.27 | 70 |
| 1987 | 6.59 | 29 |
| 1986 | -2.1 | 127 |