| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 15.03 | 2 |
| 2015 | -12.52 | 147 |
| 2014 | -.68 | 124 |
| 2013 | 1.46 | 82 |
| 2012 | 6.8 | 20 |
| 2011 | 2.09 | 84 |
| 2010 | 12.95 | 3 |
| 2009 | -30.36 | 159 |
| 2008 | -7.11 | 151 |
| 2007 | -10.22 | 151 |
| 2006 | 39.48 | 2 |
| 2005 | 15.41 | 6 |
| 2004 | -1.59 | 136 |
| 2003 | 13.02 | 7 |
| 2002 | -3.53 | 127 |
| 2001 | 8.78 | 12 |
| 2000 | -5.68 | 121 |
| 1999 | 5.78 | 19 |
| 1998 | -5.52 | 118 |
| 1997 | -4.68 | 117 |
| 1996 | 8.28 | 20 |
| 1995 | -.74 | 92 |
| 1994 | 14.22 | 4 |
| 1993 | 1.38 | 51 |
| 1992 | -.92 | 70 |
| 1991 | -1.74 | 77 |
| 1990 | -8.19 | 82 |
| 1989 | 15.5 | 6 |
| 1988 | -23.46 | 89 |
| 1987 | -4.55 | 73 |
| 1986 | 25.94 | 1 |