| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 5.51 | 35 |
| 2015 | 5.06 | 53 |
| 2014 | -1.66 | 151 |
| 2013 | 10.82 | 19 |
| 2012 | -8.69 | 168 |
| 2011 | -5.9 | 171 |
| 2010 | -1.12 | 147 |
| 2009 | -19.31 | 167 |
| 2008 | -4.39 | 160 |
| 2007 | -1.84 | 150 |
| 2006 | -21.36 | 168 |
| 2005 | 57.81 | 1 |
| 2004 | -.65 | 155 |
| 2003 | 13.76 | 19 |
| 2002 | 2.42 | 99 |
| 2001 | -8.99 | 156 |
| 2000 | 12.06 | 20 |
| 1999 | 8.12 | 32 |
| 1998 | 16.7 | 6 |
| 1997 | 8.28 | 35 |
| 1996 | 5.34 | 61 |
| 1995 | 5.32 | 54 |
| 1994 | 5.44 | 52 |
| 1993 | -1.12 | 88 |
| 1992 | 0.45 | 78 |
| 1991 | 7.1 | 29 |
| 1990 | 0.52 | 80 |
| 1989 | 1.38 | 78 |
| 1988 | 8.23 | 33 |
| 1987 | 16.26 | 8 |
| 1986 | 12.35 | 11 |