| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.164 | 110 |
| 2015 | 50.202 | 106 |
| 2014 | 50.241 | 101 |
| 2013 | 50.282 | 100 |
| 2012 | 50.325 | 96 |
| 2011 | 50.37 | 95 |
| 2010 | 50.416 | 92 |
| 2009 | 50.464 | 90 |
| 2008 | 50.514 | 88 |
| 2007 | 50.564 | 85 |
| 2006 | 50.614 | 82 |
| 2005 | 50.663 | 75 |
| 2004 | 50.711 | 71 |
| 2003 | 50.758 | 67 |
| 2002 | 50.802 | 64 |
| 2001 | 50.844 | 63 |
| 2000 | 50.881 | 61 |
| 1999 | 50.914 | 57 |
| 1998 | 50.942 | 56 |
| 1997 | 50.967 | 54 |
| 1996 | 50.99 | 52 |
| 1995 | 51.014 | 49 |
| 1994 | 51.039 | 48 |
| 1993 | 51.066 | 46 |
| 1992 | 51.091 | 45 |
| 1991 | 51.114 | 44 |
| 1990 | 51.133 | 43 |
| 1989 | 51.146 | 42 |
| 1988 | 51.155 | 41 |
| 1987 | 51.157 | 41 |
| 1986 | 51.154 | 44 |