| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | -5.12 | 123 |
| 2015 | 1.17 | 97 |
| 2014 | 2.05 | 106 |
| 2013 | 1.98 | 105 |
| 2012 | 0.96 | 116 |
| 2011 | 6.85 | 42 |
| 2010 | 14.4 | 12 |
| 2009 | -10.28 | 166 |
| 2008 | -3.44 | 149 |
| 2007 | 8.83 | 24 |
| 2006 | 5.84 | 40 |
| 2005 | 2.59 | 75 |
| 2004 | 4.67 | 67 |
| 2003 | 6.03 | 42 |
| 2002 | 2.87 | 78 |
| 2001 | -.17 | 108 |
| 2000 | 6.06 | 44 |
| 1999 | 0.48 | 113 |
| 1998 | -2.77 | 127 |
| 1997 | 0.67 | 95 |
| 1996 | 4.53 | 56 |
| 1995 | -2.53 | 112 |
| 1994 | -1.89 | 97 |
| 1993 | -3.14 | 95 |
| 1992 | 6.86 | 29 |
| 1991 | 1.04 | 73 |
| 1990 | -1.73 | 82 |
| 1989 | 4.76 | 39 |
| 1988 | 2.71 | 64 |
| 1987 | 7.03 | 23 |
| 1986 | 4.17 | 39 |