| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 1.9 | 79 |
| 2015 | 8.82 | 15 |
| 2014 | -7.9 | 169 |
| 2013 | -5.37 | 166 |
| 2012 | -10.22 | 165 |
| 2011 | 3.31 | 99 |
| 2010 | 9.15 | 21 |
| 2009 | -8.55 | 156 |
| 2008 | -8.04 | 165 |
| 2007 | -6.55 | 150 |
| 2006 | -11.82 | 168 |
| 2005 | -6.96 | 153 |
| 2004 | 2.57 | 101 |
| 2003 | -8.11 | 155 |
| 2002 | 4.33 | 52 |
| 2001 | 6.91 | 40 |
| 2000 | -2.41 | 122 |
| 1999 | 4.83 | 59 |
| 1998 | 14.02 | 9 |
| 1997 | -15.99 | 153 |
| 1996 | 3.47 | 74 |
| 1995 | 30.11 | 4 |
| 1994 | -10.92 | 121 |
| 1993 | 3.75 | 42 |
| 1992 | 21.34 | 8 |
| 1991 | -15.09 | 120 |
| 1990 | 0.76 | 75 |
| 1989 | 3.31 | 56 |
| 1988 | 10.95 | 15 |
| 1987 | 3.44 | 44 |
| 1986 | -.54 | 79 |