| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 50.052 | 119 |
| 2015 | 50.049 | 120 |
| 2014 | 50.046 | 121 |
| 2013 | 50.043 | 120 |
| 2012 | 50.041 | 123 |
| 2011 | 50.039 | 121 |
| 2010 | 50.038 | 124 |
| 2009 | 50.036 | 125 |
| 2008 | 50.035 | 123 |
| 2007 | 50.034 | 125 |
| 2006 | 50.033 | 124 |
| 2005 | 50.032 | 125 |
| 2004 | 50.031 | 127 |
| 2003 | 50.029 | 127 |
| 2002 | 50.028 | 127 |
| 2001 | 50.026 | 128 |
| 2000 | 50.025 | 129 |
| 1999 | 50.025 | 129 |
| 1998 | 50.024 | 128 |
| 1997 | 50.024 | 127 |
| 1996 | 50.025 | 128 |
| 1995 | 50.026 | 126 |
| 1994 | 50.028 | 126 |
| 1993 | 50.031 | 127 |
| 1992 | 50.033 | 127 |
| 1991 | 50.035 | 129 |
| 1990 | 50.034 | 129 |
| 1989 | 50.031 | 128 |
| 1988 | 50.026 | 127 |
| 1987 | 50.019 | 126 |
| 1986 | 50.01 | 127 |