| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.481 | 85 |
| 2015 | 50.514 | 80 |
| 2014 | 50.554 | 77 |
| 2013 | 50.6 | 74 |
| 2012 | 50.652 | 73 |
| 2011 | 50.707 | 68 |
| 2010 | 50.766 | 64 |
| 2009 | 50.827 | 61 |
| 2008 | 50.889 | 58 |
| 2007 | 50.951 | 54 |
| 2006 | 51.006 | 50 |
| 2005 | 51.053 | 50 |
| 2004 | 51.088 | 48 |
| 2003 | 51.112 | 46 |
| 2002 | 51.127 | 46 |
| 2001 | 51.137 | 43 |
| 2000 | 51.146 | 42 |
| 1999 | 51.152 | 42 |
| 1998 | 51.157 | 42 |
| 1997 | 51.16 | 41 |
| 1996 | 51.162 | 42 |
| 1995 | 51.164 | 41 |
| 1994 | 51.166 | 41 |
| 1993 | 51.168 | 41 |
| 1992 | 51.172 | 40 |
| 1991 | 51.178 | 41 |
| 1990 | 51.188 | 39 |
| 1989 | 51.202 | 38 |
| 1988 | 51.218 | 39 |
| 1987 | 51.237 | 39 |
| 1986 | 51.258 | 37 |