| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -.02 | 109 |
| 2015 | 0.97 | 116 |
| 2014 | 2.7 | 95 |
| 2013 | -.5 | 140 |
| 2012 | 2.86 | 79 |
| 2011 | 3.43 | 104 |
| 2010 | 4.56 | 94 |
| 2009 | -6.21 | 115 |
| 2008 | -.47 | 128 |
| 2007 | 1.45 | 128 |
| 2006 | 4.36 | 100 |
| 2005 | 2.45 | 118 |
| 2004 | 4.09 | 95 |
| 2003 | 1.34 | 125 |
| 2002 | 0.01 | 124 |
| 2001 | -1.48 | 132 |
| 2000 | 4.71 | 75 |
| 1999 | 1.63 | 106 |
| 1998 | 5.59 | 53 |
| 1997 | 9.37 | 31 |
| 1996 | 9.36 | 23 |
| 1995 | -8.2 | 126 |
| 1994 | 4.5 | 62 |
| 1993 | 2.93 | 56 |
| 1992 | 4.37 | 52 |
| 1991 | 3.36 | 50 |
| 1990 | 6.71 | 34 |
| 1989 | 6.14 | 45 |
| 1988 | 2.57 | 70 |
| 1987 | 3.18 | 63 |
| 1986 | -5.63 | 102 |