| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.71 | 88 |
| 2015 | -1.25 | 126 |
| 2014 | 0.27 | 129 |
| 2013 | 1.98 | 106 |
| 2012 | -.78 | 129 |
| 2011 | 13.22 | 14 |
| 2010 | -1.46 | 123 |
| 2009 | 3.34 | 71 |
| 2008 | 2.13 | 106 |
| 2007 | -10.19 | 158 |
| 2006 | 5.26 | 52 |
| 2005 | 0.75 | 108 |
| 2004 | 8.06 | 43 |
| 2003 | 8.96 | 26 |
| 2002 | 1.99 | 93 |
| 2001 | -8.55 | 159 |
| 2000 | -3.28 | 129 |
| 1999 | -4.62 | 142 |
| 1998 | 3.77 | 58 |
| 1997 | 1.57 | 84 |
| 1996 | 9.38 | 26 |
| 1995 | 5.47 | 44 |
| 1994 | 11.81 | 9 |
| 1993 | -5.87 | 109 |
| 1992 | 11.58 | 15 |
| 1991 | 3.42 | 46 |
| 1990 | -3.94 | 93 |
| 1989 | 3.95 | 49 |
| 1988 | 0.24 | 79 |
| 1987 | 4.57 | 38 |
| 1986 | -2.51 | 90 |