| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2015 | -1.37 | 135 |
| 2014 | 4 | 54 |
| 2013 | 2.28 | 77 |
| 2012 | 11.36 | 22 |
| 2011 | 3.95 | 53 |
| 2010 | 9.99 | 21 |
| 2009 | -4.5 | 149 |
| 2008 | -8.08 | 150 |
| 2007 | 13.47 | 24 |
| 2006 | 11.99 | 16 |
| 2005 | -.98 | 127 |
| 2004 | -1.72 | 127 |
| 2003 | 22.21 | 6 |
| 2002 | 36.52 | 4 |
| 2001 | 1.92 | 100 |
| 2000 | 9.81 | 20 |
| 1999 | 15.4 | 12 |
| 1998 | 15.52 | 14 |
| 1997 | 0.19 | 101 |
| 1996 | 6.82 | 28 |
| 1995 | -2.08 | 97 |
| 1994 | -.62 | 86 |
| 1993 | 2.23 | 62 |
| 1992 | -25.07 | 114 |
| 1991 | -25.07 | 113 |
| 1990 | -2.81 | 80 |
| 1989 | 4.25 | 39 |
| 1988 | 5.1 | 23 |
| 1987 | 7.66 | 16 |
| 1986 | -14.22 | 93 |