| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -8.53 | 137 |
| 2015 | -2.24 | 148 |
| 2014 | 6.76 | 38 |
| 2013 | 2.16 | 103 |
| 2012 | 2.43 | 88 |
| 2011 | 8.39 | 43 |
| 2010 | 5.95 | 76 |
| 2009 | 2.85 | 50 |
| 2008 | -1.58 | 145 |
| 2007 | -.63 | 139 |
| 2006 | -1.01 | 150 |
| 2005 | 2.65 | 113 |
| 2004 | 5.03 | 82 |
| 2003 | 20.22 | 8 |
| 2002 | -1.95 | 142 |
| 2001 | 14.01 | 12 |
| 2000 | 9.72 | 36 |
| 1999 | -5.64 | 145 |
| 1998 | 1.27 | 109 |
| 1997 | 1.58 | 107 |
| 1996 | 6.03 | 53 |
| 1995 | 1.36 | 96 |
| 1994 | -2.05 | 106 |
| 1993 | -.05 | 76 |
| 1992 | 1.67 | 67 |
| 1991 | -6.04 | 108 |
| 1990 | 22.12 | 4 |
| 1989 | 10.07 | 18 |
| 1988 | 4.6 | 54 |
| 1987 | -1.04 | 90 |
| 1986 | -2.87 | 96 |