| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 60.78 | 48 |
| 2015 | 61.24 | 50 |
| 2014 | 61.7 | 50 |
| 2013 | 62.14 | 50 |
| 2012 | 62.57 | 50 |
| 2011 | 62.99 | 52 |
| 2010 | 63.4 | 52 |
| 2009 | 63.8 | 51 |
| 2008 | 64.18 | 51 |
| 2007 | 64.56 | 50 |
| 2006 | 64.92 | 50 |
| 2005 | 65.27 | 50 |
| 2004 | 65.61 | 50 |
| 2003 | 65.94 | 49 |
| 2002 | 66.25 | 49 |
| 2001 | 66.55 | 52 |
| 2000 | 66.85 | 52 |
| 1999 | 67.13 | 51 |
| 1998 | 67.4 | 51 |
| 1997 | 67.65 | 51 |
| 1996 | 67.91 | 51 |
| 1995 | 68.16 | 53 |
| 1994 | 68.42 | 53 |
| 1993 | 68.67 | 55 |
| 1992 | 68.92 | 56 |
| 1991 | 69.17 | 55 |
| 1990 | 69.42 | 54 |
| 1989 | 69.67 | 56 |
| 1988 | 69.92 | 56 |
| 1987 | 70.17 | 55 |
| 1986 | 70.41 | 56 |