| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 29.26 | 136 |
| 2015 | 29.79 | 136 |
| 2014 | 30.34 | 135 |
| 2013 | 30.9 | 133 |
| 2012 | 31.49 | 131 |
| 2011 | 32.1 | 131 |
| 2010 | 32.73 | 129 |
| 2009 | 33.38 | 129 |
| 2008 | 34.03 | 128 |
| 2007 | 34.69 | 126 |
| 2006 | 35.36 | 126 |
| 2005 | 36.04 | 125 |
| 2004 | 36.66 | 124 |
| 2003 | 37.05 | 124 |
| 2002 | 37.44 | 125 |
| 2001 | 37.83 | 125 |
| 2000 | 38.22 | 126 |
| 1999 | 38.61 | 127 |
| 1998 | 39.01 | 128 |
| 1997 | 39.4 | 128 |
| 1996 | 39.8 | 128 |
| 1995 | 39.91 | 128 |
| 1994 | 40.02 | 129 |
| 1993 | 40.13 | 129 |
| 1992 | 40.24 | 130 |
| 1991 | 40.35 | 130 |
| 1990 | 40.46 | 131 |
| 1989 | 40.57 | 130 |
| 1988 | 40.71 | 130 |
| 1987 | 40.87 | 131 |
| 1986 | 41.02 | 132 |