| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 23.46 | 161 |
| 2015 | 22.46 | 158 |
| 2014 | 21.57 | 156 |
| 2013 | 20.73 | 154 |
| 2012 | 19.98 | 153 |
| 2011 | 19.36 | 153 |
| 2010 | 18.89 | 152 |
| 2009 | 18.65 | 152 |
| 2008 | 18.58 | 152 |
| 2007 | 18.63 | 154 |
| 2006 | 18.66 | 155 |
| 2005 | 18.6 | 156 |
| 2004 | 18.54 | 156 |
| 2003 | 18.38 | 155 |
| 2002 | 18.14 | 156 |
| 2001 | 17.86 | 156 |
| 2000 | 17.58 | 155 |
| 1999 | 17.44 | 155 |
| 1998 | 17.29 | 155 |
| 1997 | 17.1 | 155 |
| 1996 | 16.87 | 155 |
| 1995 | 16.59 | 154 |
| 1994 | 16.41 | 153 |
| 1993 | 16.19 | 153 |
| 1992 | 15.94 | 154 |
| 1991 | 15.65 | 155 |
| 1990 | 15.33 | 153 |
| 1989 | 15.08 | 151 |
| 1988 | 14.79 | 150 |
| 1987 | 14.51 | 149 |
| 1986 | 14.29 | 149 |