| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 11.888 | 41 |
| 2015 | 12.663 | 44 |
| 2014 | 12.605 | 46 |
| 2013 | 11.658 | 53 |
| 2012 | 11.795 | 58 |
| 2011 | 12.403 | 51 |
| 2010 | 13.252 | 46 |
| 2009 | 14.498 | 47 |
| 2008 | 13.598 | 56 |
| 2007 | 13.862 | 56 |
| 2006 | 15.979 | 39 |
| 2005 | 14.051 | 56 |
| 2004 | 14.124 | 57 |
| 2003 | 16.935 | 45 |
| 2002 | 18.945 | 37 |
| 2001 | 18.548 | 52 |
| 2000 | 18.455 | 54 |
| 1999 | 27.663 | 27 |
| 1998 | 32.154 | 22 |
| 1997 | 21.818 | 45 |
| 1996 | 19.218 | 61 |
| 1995 | 18.852 | 52 |
| 1994 | 17.76 | 46 |
| 1993 | 20.587 | 40 |
| 1992 | 24.033 | 27 |
| 1991 | 25.533 | 25 |
| 1990 | 20.825 | 28 |
| 1989 | 21.699 | 21 |
| 1988 | 22.098 | 18 |
| 1987 | 21.667 | 16 |
| 1986 | 21.492 | 12 |