| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.47 | 87 |
| 2015 | 50.478 | 85 |
| 2014 | 50.484 | 84 |
| 2013 | 50.491 | 85 |
| 2012 | 50.497 | 85 |
| 2011 | 50.503 | 84 |
| 2010 | 50.508 | 85 |
| 2009 | 50.514 | 85 |
| 2008 | 50.519 | 87 |
| 2007 | 50.524 | 87 |
| 2006 | 50.529 | 86 |
| 2005 | 50.534 | 85 |
| 2004 | 50.539 | 85 |
| 2003 | 50.543 | 85 |
| 2002 | 50.548 | 84 |
| 2001 | 50.553 | 83 |
| 2000 | 50.559 | 82 |
| 1999 | 50.566 | 81 |
| 1998 | 50.574 | 78 |
| 1997 | 50.582 | 79 |
| 1996 | 50.592 | 80 |
| 1995 | 50.603 | 79 |
| 1994 | 50.615 | 74 |
| 1993 | 50.628 | 75 |
| 1992 | 50.642 | 74 |
| 1991 | 50.656 | 73 |
| 1990 | 50.669 | 72 |
| 1989 | 50.682 | 71 |
| 1988 | 50.695 | 67 |
| 1987 | 50.707 | 68 |
| 1986 | 50.719 | 68 |