| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 7.13 | 17 |
| 2015 | 0.89 | 119 |
| 2014 | -4.94 | 164 |
| 2013 | -14.32 | 173 |
| 2012 | -15.34 | 174 |
| 2011 | -10.69 | 175 |
| 2010 | -4.18 | 162 |
| 2009 | -11.23 | 149 |
| 2008 | -.79 | 134 |
| 2007 | 5.9 | 83 |
| 2006 | 3.42 | 116 |
| 2005 | 2.05 | 126 |
| 2004 | 2.8 | 122 |
| 2003 | 5.95 | 66 |
| 2002 | 5.15 | 61 |
| 2001 | 2.33 | 83 |
| 2000 | -.31 | 133 |
| 1999 | 0.88 | 114 |
| 1998 | 1.85 | 99 |
| 1997 | -.15 | 122 |
| 1996 | -.01 | 121 |
| 1995 | 1.13 | 99 |
| 1994 | 2.67 | 86 |
| 1993 | -3.16 | 95 |
| 1992 | 5.06 | 48 |
| 1991 | 2.23 | 63 |
| 1990 | 5 | 40 |
| 1989 | 4.34 | 56 |
| 1988 | 6.34 | 42 |
| 1987 | 6.79 | 35 |
| 1986 | 1.49 | 76 |