| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 20.25 | 161 |
| 2015 | 20.48 | 162 |
| 2014 | 20.71 | 161 |
| 2013 | 20.95 | 161 |
| 2012 | 21.18 | 161 |
| 2011 | 21.42 | 162 |
| 2010 | 21.66 | 162 |
| 2009 | 21.89 | 162 |
| 2008 | 22.14 | 162 |
| 2007 | 22.38 | 162 |
| 2006 | 22.62 | 162 |
| 2005 | 22.87 | 162 |
| 2004 | 23.12 | 163 |
| 2003 | 23.37 | 161 |
| 2002 | 23.62 | 161 |
| 2001 | 23.87 | 161 |
| 2000 | 24.13 | 161 |
| 1999 | 24.39 | 162 |
| 1998 | 24.58 | 163 |
| 1997 | 24.75 | 163 |
| 1996 | 24.92 | 163 |
| 1995 | 25.09 | 163 |
| 1994 | 25.26 | 163 |
| 1993 | 25.43 | 163 |
| 1992 | 25.6 | 163 |
| 1991 | 25.77 | 163 |
| 1990 | 25.94 | 166 |
| 1989 | 26.05 | 165 |
| 1988 | 26.13 | 165 |
| 1987 | 26.2 | 165 |
| 1986 | 26.28 | 165 |