| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 48.28 | 35 |
| 2015 | 48.29 | 35 |
| 2014 | 48.28 | 35 |
| 2013 | 48.31 | 34 |
| 2012 | 49.66 | 14 |
| 2011 | 50.56 | 7 |
| 2010 | 50.62 | 8 |
| 2009 | 50.69 | 6 |
| 2008 | 50.73 | 6 |
| 2007 | 50.74 | 6 |
| 2006 | 50.75 | 5 |
| 2005 | 50.6 | 6 |
| 2004 | 50.42 | 7 |
| 2003 | 50.27 | 9 |
| 2002 | 50.14 | 10 |
| 2001 | 50.02 | 9 |
| 2000 | 50.06 | 9 |
| 1999 | 50.06 | 10 |
| 1998 | 50.07 | 10 |
| 1997 | 50.07 | 9 |
| 1996 | 50.06 | 9 |
| 1995 | 50.06 | 9 |
| 1994 | 50.05 | 9 |
| 1993 | 50.02 | 8 |
| 1992 | 49.98 | 8 |
| 1991 | 49.94 | 8 |
| 1990 | 49.91 | 8 |