| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -5.03 | 115 |
| 2015 | -4.76 | 140 |
| 2014 | 1.35 | 87 |
| 2013 | 2.53 | 59 |
| 2012 | 2.53 | 68 |
| 2011 | 3.82 | 48 |
| 2010 | 5.2 | 34 |
| 2009 | 3.43 | 29 |
| 2008 | 5.39 | 43 |
| 2007 | 5.25 | 54 |
| 2006 | 4.12 | 60 |
| 2005 | 3.2 | 76 |
| 2004 | 2.65 | 86 |
| 2003 | -1.82 | 128 |
| 2002 | -.03 | 103 |
| 2001 | -2.62 | 122 |
| 2000 | 2.36 | 69 |
| 1999 | -1.13 | 99 |
| 1998 | -2.25 | 111 |
| 1997 | 1.42 | 84 |
| 1996 | 1.6 | 88 |
| 1995 | 6.89 | 26 |
| 1994 | 5.71 | 19 |
| 1993 | 2.83 | 37 |
| 1992 | -2.31 | 77 |
| 1991 | 6.41 | 18 |
| 1990 | 1.09 | 46 |
| 1989 | -5.65 | 80 |
| 1988 | -.59 | 65 |
| 1987 | -5.81 | 76 |
| 1986 | -1.2 | 63 |