| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 65.762 | 45 |
| 2015 | 65.891 | 60 |
| 2014 | 63.077 | 72 |
| 2013 | 64.206 | 73 |
| 2012 | 63.979 | 73 |
| 2011 | 61.664 | 78 |
| 2010 | 61.387 | 86 |
| 2009 | 63.563 | 78 |
| 2008 | 59.937 | 85 |
| 2007 | 58.676 | 92 |
| 2006 | 57.428 | 94 |
| 2005 | 57.008 | 94 |
| 2004 | 56.268 | 96 |
| 2003 | 54.055 | 102 |
| 2002 | 56.778 | 93 |
| 2001 | 68.072 | 40 |
| 2000 | 66.884 | 44 |
| 1999 | 66.891 | 41 |
| 1998 | 65.296 | 45 |
| 1997 | 64.798 | 44 |
| 1996 | 65.097 | 43 |
| 1995 | 65.771 | 38 |
| 1994 | 65.462 | 30 |
| 1993 | 65.279 | 30 |
| 1992 | 63.325 | 35 |
| 1991 | 60.561 | 37 |
| 1990 | 55.854 | 42 |
| 1989 | 48.036 | 60 |
| 1988 | 52.536 | 43 |
| 1987 | 54.077 | 40 |
| 1986 | 54.819 | 37 |