| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 21.59 | 152 |
| 2015 | 20.68 | 151 |
| 2014 | 19.8 | 148 |
| 2013 | 18.98 | 148 |
| 2012 | 18.25 | 146 |
| 2011 | 17.67 | 147 |
| 2010 | 17.28 | 147 |
| 2009 | 16.95 | 146 |
| 2008 | 16.83 | 147 |
| 2007 | 16.82 | 147 |
| 2006 | 16.8 | 148 |
| 2005 | 16.69 | 148 |
| 2004 | 16.53 | 148 |
| 2003 | 16.28 | 147 |
| 2002 | 15.95 | 145 |
| 2001 | 15.6 | 145 |
| 2000 | 15.26 | 144 |
| 1999 | 15.04 | 143 |
| 1998 | 14.81 | 144 |
| 1997 | 14.57 | 146 |
| 1996 | 14.32 | 145 |
| 1995 | 14.05 | 145 |
| 1994 | 13.71 | 143 |
| 1993 | 13.38 | 143 |
| 1992 | 13.08 | 141 |
| 1991 | 12.79 | 142 |
| 1990 | 12.52 | 142 |
| 1989 | 12.13 | 140 |
| 1988 | 11.75 | 139 |
| 1987 | 11.38 | 139 |
| 1986 | 11.03 | 139 |