| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2014 | 1.38 | 98 |
| 2013 | 2.2 | 78 |
| 2012 | 2.2 | 90 |
| 2011 | 2 | 84 |
| 2010 | 11.34 | 17 |
| 2009 | 14.84 | 20 |
| 2008 | 24.98 | 6 |
| 2007 | 14.32 | 20 |
| 2006 | 0.04 | 126 |
| 2005 | -2.42 | 133 |
| 2004 | -3.23 | 131 |
| 2003 | -5.95 | 133 |
| 2002 | 4.12 | 61 |
| 2001 | 13.45 | 13 |
| 1998 | -8.38 | 127 |
| 1997 | -1.54 | 112 |
| 1996 | -13.77 | 125 |
| 1995 | 10.96 | 8 |
| 1994 | -2.51 | 97 |
| 1993 | 0.58 | 75 |
| 1992 | -15.97 | 108 |
| 1991 | 3.12 | 56 |
| 1990 | -8.47 | 89 |
| 1989 | -.17 | 76 |
| 1988 | 3.75 | 38 |
| 1987 | 0.32 | 66 |
| 1986 | 2.55 | 51 |