| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.598 | 74 |
| 2015 | 50.609 | 72 |
| 2014 | 50.626 | 71 |
| 2013 | 50.645 | 71 |
| 2012 | 50.662 | 71 |
| 2011 | 50.668 | 71 |
| 2010 | 50.657 | 72 |
| 2009 | 50.626 | 77 |
| 2008 | 50.575 | 82 |
| 2007 | 50.509 | 88 |
| 2006 | 50.438 | 94 |
| 2005 | 50.368 | 102 |
| 2004 | 50.303 | 108 |
| 2003 | 50.241 | 112 |
| 2002 | 50.18 | 115 |
| 2001 | 50.115 | 125 |
| 2000 | 50.043 | 127 |
| 1999 | 49.96 | 132 |
| 1998 | 49.87 | 135 |
| 1997 | 49.783 | 142 |
| 1996 | 49.711 | 144 |
| 1995 | 49.665 | 147 |
| 1994 | 49.653 | 149 |
| 1993 | 49.672 | 146 |
| 1992 | 49.703 | 144 |
| 1991 | 49.717 | 142 |
| 1990 | 49.69 | 145 |
| 1989 | 49.609 | 147 |
| 1988 | 49.481 | 151 |
| 1987 | 49.328 | 160 |
| 1986 | 49.183 | 163 |