| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.671 | 71 |
| 2015 | 50.678 | 69 |
| 2014 | 50.683 | 69 |
| 2013 | 50.687 | 69 |
| 2012 | 50.694 | 68 |
| 2011 | 50.705 | 69 |
| 2010 | 50.726 | 67 |
| 2009 | 50.757 | 65 |
| 2008 | 50.796 | 65 |
| 2007 | 50.833 | 62 |
| 2006 | 50.858 | 60 |
| 2005 | 50.862 | 61 |
| 2004 | 50.84 | 61 |
| 2003 | 50.795 | 64 |
| 2002 | 50.736 | 70 |
| 2001 | 50.671 | 75 |
| 2000 | 50.607 | 79 |
| 1999 | 50.548 | 84 |
| 1998 | 50.493 | 92 |
| 1997 | 50.443 | 99 |
| 1996 | 50.392 | 101 |
| 1995 | 50.342 | 105 |
| 1994 | 50.289 | 110 |
| 1993 | 50.237 | 115 |
| 1992 | 50.198 | 115 |
| 1991 | 50.185 | 119 |
| 1990 | 50.209 | 118 |
| 1989 | 50.276 | 111 |
| 1988 | 50.378 | 101 |
| 1987 | 50.499 | 88 |
| 1986 | 50.617 | 78 |