| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 51.133 | 40 |
| 2015 | 51.128 | 40 |
| 2014 | 51.12 | 40 |
| 2013 | 51.11 | 41 |
| 2012 | 51.1 | 41 |
| 2011 | 51.094 | 42 |
| 2010 | 51.093 | 41 |
| 2009 | 51.098 | 40 |
| 2008 | 51.109 | 39 |
| 2007 | 51.119 | 40 |
| 2006 | 51.122 | 41 |
| 2005 | 51.113 | 45 |
| 2004 | 51.091 | 46 |
| 2003 | 51.058 | 51 |
| 2002 | 51.016 | 51 |
| 2001 | 50.971 | 53 |
| 2000 | 50.925 | 56 |
| 1999 | 50.88 | 59 |
| 1998 | 50.835 | 60 |
| 1997 | 50.793 | 63 |
| 1996 | 50.755 | 63 |
| 1995 | 50.724 | 67 |
| 1994 | 50.699 | 69 |
| 1993 | 50.68 | 70 |
| 1992 | 50.666 | 71 |
| 1991 | 50.652 | 74 |
| 1990 | 50.639 | 76 |