| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.89 | 17 |
| 2015 | 1.07 | 94 |
| 2014 | 3.41 | 28 |
| 2013 | 0 | 118 |
| 2012 | 2.83 | 63 |
| 2011 | 2.41 | 77 |
| 2010 | 0.1 | 124 |
| 2009 | -2.51 | 112 |
| 2008 | 1.46 | 87 |
| 2007 | 2.21 | 96 |
| 2006 | -.07 | 130 |
| 2005 | 9.52 | 24 |
| 2004 | 7.89 | 28 |
| 2003 | -1.66 | 127 |
| 2002 | -.74 | 110 |
| 2001 | -1.64 | 119 |
| 2000 | -1.85 | 108 |
| 1999 | 4.93 | 25 |
| 1998 | -.87 | 107 |
| 1997 | 1.65 | 79 |
| 1996 | 4.48 | 45 |
| 1995 | 4.39 | 36 |
| 1994 | 0.86 | 70 |
| 1993 | -.48 | 73 |
| 1992 | 10.02 | 7 |
| 1991 | -4.04 | 86 |
| 1990 | 1.5 | 42 |
| 1989 | -2.18 | 72 |
| 1988 | 6.79 | 17 |
| 1987 | 0.27 | 58 |