| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -1.24 | 122 |
| 2015 | -.97 | 139 |
| 2014 | 6.27 | 45 |
| 2013 | 11.02 | 17 |
| 2012 | 3.05 | 75 |
| 2011 | 3.7 | 98 |
| 2010 | 1.58 | 132 |
| 2009 | -3.87 | 99 |
| 2008 | 1.35 | 112 |
| 2007 | -12.11 | 172 |
| 2006 | 54.93 | 1 |
| 2005 | 16.56 | 7 |
| 2004 | 12.98 | 22 |
| 2003 | 2.13 | 111 |
| 2002 | -7.09 | 153 |
| 2001 | 2.06 | 90 |
| 2000 | -7.84 | 152 |
| 1999 | 3.87 | 74 |
| 1998 | 0.7 | 117 |
| 1997 | 5.01 | 73 |
| 1996 | 2.21 | 103 |
| 1995 | 1.12 | 100 |
| 1994 | 5.5 | 50 |
| 1993 | 6.35 | 32 |
| 1992 | -.53 | 86 |
| 1991 | -.53 | 85 |
| 1990 | -6.7 | 108 |
| 1989 | 12.36 | 12 |
| 1988 | 0.91 | 78 |
| 1987 | -2.71 | 95 |
| 1986 | 8.71 | 26 |