| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 52.06 | 3 |
| 2015 | 52.08 | 3 |
| 2014 | 52.09 | 3 |
| 2013 | 52.11 | 3 |
| 2012 | 52.12 | 3 |
| 2011 | 52.11 | 3 |
| 2010 | 52.08 | 4 |
| 2009 | 52.07 | 4 |
| 2008 | 52.05 | 4 |
| 2007 | 52.02 | 3 |
| 2006 | 51.98 | 3 |
| 2005 | 51.96 | 3 |
| 2004 | 51.92 | 3 |
| 2003 | 51.9 | 3 |
| 2002 | 51.9 | 3 |
| 2001 | 51.94 | 3 |
| 2000 | 52.03 | 3 |
| 1999 | 52.17 | 2 |
| 1998 | 52.36 | 2 |
| 1997 | 52.57 | 2 |
| 1996 | 52.77 | 2 |
| 1995 | 52.93 | 2 |
| 1994 | 52.84 | 2 |
| 1993 | 52.71 | 2 |
| 1992 | 52.55 | 2 |
| 1991 | 52.41 | 2 |
| 1990 | 52.29 | 2 |