| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 23.39 | 195 |
| 2015 | 23.77 | 194 |
| 2014 | 24.19 | 191 |
| 2013 | 24.64 | 191 |
| 2012 | 25.14 | 190 |
| 2011 | 25.67 | 186 |
| 2010 | 26.24 | 185 |
| 2009 | 26.82 | 184 |
| 2008 | 27.41 | 183 |
| 2007 | 28 | 181 |
| 2006 | 28.61 | 177 |
| 2005 | 29.22 | 174 |
| 2004 | 29.84 | 171 |
| 2003 | 30.47 | 171 |
| 2002 | 31.1 | 168 |
| 2001 | 31.74 | 167 |
| 2000 | 32.13 | 166 |
| 1999 | 32.49 | 162 |
| 1998 | 32.86 | 160 |
| 1997 | 33.22 | 158 |
| 1996 | 33.59 | 151 |
| 1995 | 33.96 | 151 |
| 1994 | 34.33 | 149 |
| 1993 | 34.71 | 148 |
| 1992 | 35.09 | 148 |
| 1991 | 35.47 | 146 |
| 1990 | 35.43 | 145 |
| 1989 | 35.35 | 143 |
| 1988 | 35.26 | 142 |
| 1987 | 35.18 | 140 |
| 1986 | 35.1 | 141 |