| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.367 | 94 |
| 2015 | 50.406 | 90 |
| 2014 | 50.447 | 87 |
| 2013 | 50.491 | 84 |
| 2012 | 50.534 | 81 |
| 2011 | 50.573 | 78 |
| 2010 | 50.605 | 77 |
| 2009 | 50.627 | 76 |
| 2008 | 50.642 | 75 |
| 2007 | 50.651 | 76 |
| 2006 | 50.659 | 75 |
| 2005 | 50.669 | 74 |
| 2004 | 50.681 | 73 |
| 2003 | 50.695 | 73 |
| 2002 | 50.707 | 72 |
| 2001 | 50.717 | 72 |
| 2000 | 50.721 | 73 |
| 1999 | 50.719 | 70 |
| 1998 | 50.713 | 70 |
| 1997 | 50.697 | 71 |
| 1996 | 50.664 | 75 |
| 1995 | 50.61 | 78 |
| 1994 | 50.528 | 88 |
| 1993 | 50.422 | 100 |
| 1992 | 50.3 | 109 |
| 1991 | 50.185 | 120 |
| 1990 | 50.093 | 127 |
| 1989 | 50.033 | 127 |
| 1988 | 50.005 | 129 |
| 1987 | 50.002 | 128 |
| 1986 | 50.012 | 126 |