| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 15.63 | 134 |
| 2015 | 15.16 | 134 |
| 2014 | 14.74 | 134 |
| 2013 | 14.39 | 135 |
| 2012 | 14.09 | 134 |
| 2011 | 13.81 | 135 |
| 2010 | 13.52 | 134 |
| 2009 | 13.23 | 134 |
| 2008 | 12.95 | 134 |
| 2007 | 12.67 | 134 |
| 2006 | 12.42 | 134 |
| 2005 | 12.2 | 133 |
| 2004 | 12 | 134 |
| 2003 | 11.84 | 135 |
| 2002 | 11.7 | 134 |
| 2001 | 11.57 | 133 |
| 2000 | 11.42 | 134 |
| 1999 | 11.27 | 134 |
| 1998 | 11.1 | 131 |
| 1997 | 10.92 | 130 |
| 1996 | 10.74 | 130 |
| 1995 | 10.56 | 128 |
| 1994 | 10.4 | 128 |
| 1993 | 10.24 | 128 |
| 1992 | 10.08 | 127 |
| 1991 | 9.93 | 130 |
| 1990 | 9.78 | 130 |
| 1989 | 9.68 | 129 |
| 1988 | 9.6 | 129 |
| 1987 | 9.53 | 129 |
| 1986 | 9.47 | 130 |