| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 67.36 | 85 |
| 2015 | 67.38 | 85 |
| 2014 | 67.42 | 83 |
| 2013 | 67.48 | 83 |
| 2012 | 67.55 | 82 |
| 2011 | 67.62 | 82 |
| 2010 | 67.69 | 79 |
| 2009 | 67.76 | 79 |
| 2008 | 67.83 | 79 |
| 2007 | 67.9 | 78 |
| 2006 | 67.97 | 75 |
| 2005 | 68 | 71 |
| 2004 | 67.9 | 71 |
| 2003 | 67.8 | 71 |
| 2002 | 67.85 | 71 |
| 2001 | 67.95 | 71 |
| 2000 | 68.07 | 71 |
| 1999 | 68.22 | 70 |
| 1998 | 68.45 | 68 |
| 1997 | 68.6 | 67 |
| 1996 | 68.65 | 66 |
| 1995 | 68.75 | 66 |
| 1994 | 68.9 | 66 |
| 1993 | 68.8 | 66 |
| 1992 | 68.85 | 65 |
| 1991 | 69.2 | 63 |
| 1990 | 69.25 | 60 |
| 1989 | 69.2 | 60 |
| 1988 | 69.11 | 59 |
| 1987 | 68.95 | 57 |
| 1986 | 68.78 | 55 |