| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.316 | 14 |
| 2015 | 52.298 | 14 |
| 2014 | 52.274 | 15 |
| 2013 | 52.258 | 15 |
| 2012 | 52.239 | 15 |
| 2011 | 52.201 | 15 |
| 2010 | 52.142 | 14 |
| 2009 | 52.056 | 15 |
| 2008 | 51.954 | 19 |
| 2007 | 51.84 | 19 |
| 2006 | 51.743 | 22 |
| 2005 | 51.683 | 23 |
| 2004 | 51.656 | 25 |
| 2003 | 51.659 | 24 |
| 2002 | 51.681 | 23 |
| 2001 | 51.704 | 24 |
| 2000 | 51.714 | 25 |
| 1999 | 51.71 | 24 |
| 1998 | 51.693 | 22 |
| 1997 | 51.671 | 22 |
| 1996 | 51.625 | 22 |
| 1995 | 51.565 | 20 |
| 1994 | 51.495 | 23 |
| 1993 | 51.406 | 27 |
| 1992 | 51.311 | 34 |
| 1991 | 51.228 | 37 |
| 1990 | 51.172 | 42 |
| 1989 | 51.138 | 44 |
| 1988 | 51.13 | 42 |
| 1987 | 51.147 | 43 |
| 1986 | 51.19 | 42 |