| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 0.501 | 123 |
| 2015 | 1.098 | 137 |
| 2014 | 1.928 | 128 |
| 2013 | 1.689 | 133 |
| 2012 | -.388 | 158 |
| 2011 | 1.407 | 147 |
| 2010 | 1.999 | 129 |
| 2009 | -2.406 | 140 |
| 2008 | 0.954 | 148 |
| 2007 | 1.455 | 159 |
| 2006 | 3.827 | 125 |
| 2005 | 2.685 | 131 |
| 2004 | 1.742 | 146 |
| 2003 | 0.962 | 138 |
| 2002 | 1.144 | 133 |
| 2001 | 1.517 | 126 |
| 2000 | 4.976 | 73 |
| 1999 | 3.492 | 86 |
| 1998 | 1.865 | 116 |
| 1997 | 2.282 | 117 |
| 1996 | 3.509 | 83 |
| 1995 | 1.968 | 93 |
| 1994 | 3.39 | 68 |
| 1993 | 2.459 | 71 |
| 1992 | 1.87 | 82 |
| 1991 | 1.832 | 74 |
| 1990 | 3.979 | 58 |
| 1989 | 0.73 | 86 |
| 1988 | 1.969 | 78 |
| 1987 | 1.039 | 85 |
| 1986 | 2.525 | 69 |