| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 16.59 | 29 |
| 2015 | 16.3 | 29 |
| 2014 | 16.05 | 28 |
| 2013 | 15.74 | 28 |
| 2012 | 15.41 | 28 |
| 2011 | 15.11 | 28 |
| 2010 | 14.89 | 28 |
| 2009 | 14.77 | 28 |
| 2008 | 14.72 | 27 |
| 2007 | 14.73 | 25 |
| 2006 | 14.77 | 25 |
| 2005 | 14.82 | 25 |
| 2004 | 14.86 | 24 |
| 2003 | 14.93 | 23 |
| 2002 | 15.03 | 19 |
| 2001 | 15.15 | 19 |
| 2000 | 15.26 | 15 |
| 1999 | 15.42 | 12 |
| 1998 | 15.59 | 12 |
| 1997 | 15.75 | 8 |
| 1996 | 15.89 | 5 |
| 1995 | 16.01 | 3 |
| 1994 | 16.14 | 3 |
| 1993 | 16.26 | 2 |
| 1992 | 16.34 | 2 |
| 1991 | 16.37 | 2 |
| 1990 | 16.36 | 2 |
| 1989 | 16.3 | 2 |
| 1988 | 16.2 | 2 |
| 1987 | 16.05 | 2 |
| 1986 | 15.87 | 2 |