| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.985 | 19 |
| 2015 | 51.957 | 19 |
| 2014 | 51.934 | 20 |
| 2013 | 51.917 | 20 |
| 2012 | 51.907 | 20 |
| 2011 | 51.909 | 20 |
| 2010 | 51.922 | 20 |
| 2009 | 51.95 | 20 |
| 2008 | 51.991 | 17 |
| 2007 | 52.036 | 15 |
| 2006 | 52.077 | 15 |
| 2005 | 52.107 | 14 |
| 2004 | 52.124 | 15 |
| 2003 | 52.13 | 14 |
| 2002 | 52.13 | 13 |
| 2001 | 52.13 | 13 |
| 2000 | 52.137 | 12 |
| 1999 | 52.151 | 12 |
| 1998 | 52.17 | 12 |
| 1997 | 52.193 | 12 |
| 1996 | 52.215 | 12 |
| 1995 | 52.236 | 11 |
| 1994 | 52.255 | 11 |
| 1993 | 52.273 | 11 |
| 1992 | 52.292 | 10 |
| 1991 | 52.312 | 11 |
| 1990 | 52.337 | 10 |
| 1989 | 52.367 | 10 |
| 1988 | 52.4 | 10 |
| 1987 | 52.437 | 10 |
| 1986 | 52.475 | 11 |