| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -1.25 | 127 |
| 2015 | 5.82 | 100 |
| 2014 | 1.39 | 143 |
| 2013 | 1.34 | 148 |
| 2012 | 2.59 | 136 |
| 2011 | 1.47 | 144 |
| 2010 | 0.25 | 151 |
| 2009 | -9.79 | 160 |
| 2008 | 3.3 | 147 |
| 2007 | 11.37 | 126 |
| 2006 | 11.59 | 128 |
| 2005 | 8.85 | 125 |
| 2004 | 6.13 | 133 |
| 2003 | 15.58 | 62 |
| 2002 | 5.35 | 122 |
| 2001 | 4.93 | 133 |
| 2000 | 6.05 | 122 |
| 1999 | 24.84 | 32 |
| 1998 | 14.81 | 57 |
| 1997 | 7.15 | 122 |
| 1996 | -2.11 | 149 |
| 1995 | 19.71 | 61 |
| 1994 | 8.89 | 110 |
| 1993 | 7.23 | 96 |
| 1992 | 10.09 | 87 |
| 1991 | 15.36 | 72 |
| 1990 | 3.63 | 105 |
| 1989 | 13.34 | 76 |
| 1988 | 17.9 | 62 |
| 1987 | 36.5 | 23 |
| 1986 | 18.13 | 50 |