| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.558 | 26 |
| 2015 | 51.545 | 26 |
| 2014 | 51.532 | 26 |
| 2013 | 51.52 | 27 |
| 2012 | 51.51 | 28 |
| 2011 | 51.505 | 27 |
| 2010 | 51.506 | 27 |
| 2009 | 51.512 | 27 |
| 2008 | 51.524 | 28 |
| 2007 | 51.543 | 27 |
| 2006 | 51.571 | 27 |
| 2005 | 51.608 | 26 |
| 2004 | 51.656 | 24 |
| 2003 | 51.714 | 22 |
| 2002 | 51.776 | 22 |
| 2001 | 51.832 | 22 |
| 2000 | 51.876 | 17 |
| 1999 | 51.904 | 16 |
| 1998 | 51.917 | 15 |
| 1997 | 51.931 | 14 |
| 1996 | 51.971 | 13 |
| 1995 | 52.054 | 13 |
| 1994 | 52.193 | 12 |
| 1993 | 52.378 | 9 |
| 1992 | 52.581 | 7 |
| 1991 | 52.763 | 6 |
| 1990 | 52.894 | 6 |
| 1989 | 52.96 | 6 |
| 1988 | 52.965 | 6 |
| 1987 | 52.923 | 6 |
| 1986 | 52.857 | 7 |