| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.68 | 6 |
| 2015 | 50.69 | 6 |
| 2014 | 50.7 | 6 |
| 2013 | 50.68 | 6 |
| 2012 | 50.61 | 7 |
| 2011 | 50.5 | 8 |
| 2010 | 50.33 | 10 |
| 2009 | 50.01 | 12 |
| 2008 | 49.67 | 13 |
| 2007 | 49.37 | 17 |
| 2006 | 49.11 | 20 |
| 2005 | 48.92 | 22 |
| 2004 | 48.78 | 23 |
| 2003 | 48.72 | 24 |
| 2002 | 48.71 | 25 |
| 2001 | 48.71 | 23 |
| 2000 | 48.68 | 23 |
| 1999 | 48.4 | 25 |
| 1998 | 48.03 | 28 |
| 1997 | 47.72 | 29 |
| 1996 | 47.53 | 30 |
| 1995 | 47.52 | 30 |
| 1994 | 47.38 | 31 |
| 1993 | 47.41 | 32 |
| 1992 | 47.58 | 30 |
| 1991 | 47.81 | 27 |
| 1990 | 48.06 | 26 |