| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 38.21 | 93 |
| 2015 | 38.76 | 93 |
| 2014 | 39.37 | 94 |
| 2013 | 39.99 | 95 |
| 2012 | 40.64 | 96 |
| 2011 | 41.35 | 96 |
| 2010 | 42.16 | 96 |
| 2009 | 42.94 | 96 |
| 2008 | 43.8 | 95 |
| 2007 | 44.66 | 96 |
| 2006 | 45.43 | 94 |
| 2005 | 46.04 | 94 |
| 2004 | 46.57 | 94 |
| 2003 | 46.94 | 91 |
| 2002 | 47.2 | 89 |
| 2001 | 47.39 | 85 |
| 2000 | 47.52 | 82 |
| 1999 | 47.97 | 80 |
| 1998 | 48.32 | 78 |
| 1997 | 48.49 | 76 |
| 1996 | 48.38 | 75 |
| 1995 | 48 | 73 |
| 1994 | 47.56 | 69 |
| 1993 | 46.93 | 65 |
| 1992 | 46.24 | 64 |
| 1991 | 45.63 | 64 |
| 1990 | 45.14 | 62 |
| 1989 | 45.87 | 59 |
| 1988 | 46.76 | 60 |
| 1987 | 47.74 | 60 |
| 1986 | 48.77 | 61 |