| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.186 | 107 |
| 2015 | 50.18 | 107 |
| 2014 | 50.168 | 110 |
| 2013 | 50.151 | 113 |
| 2012 | 50.129 | 113 |
| 2011 | 50.104 | 117 |
| 2010 | 50.078 | 119 |
| 2009 | 50.05 | 122 |
| 2008 | 50.02 | 128 |
| 2007 | 49.99 | 129 |
| 2006 | 49.962 | 131 |
| 2005 | 49.939 | 132 |
| 2004 | 49.921 | 133 |
| 2003 | 49.909 | 135 |
| 2002 | 49.901 | 137 |
| 2001 | 49.893 | 137 |
| 2000 | 49.884 | 136 |
| 1999 | 49.872 | 136 |
| 1998 | 49.857 | 138 |
| 1997 | 49.84 | 137 |
| 1996 | 49.822 | 138 |
| 1995 | 49.804 | 138 |
| 1994 | 49.787 | 137 |
| 1993 | 49.77 | 140 |
| 1992 | 49.751 | 140 |
| 1991 | 49.727 | 141 |
| 1990 | 49.696 | 143 |
| 1989 | 49.658 | 145 |
| 1988 | 49.616 | 146 |
| 1987 | 49.564 | 148 |
| 1986 | 49.495 | 150 |