| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 22.65 | 156 |
| 2015 | 22.5 | 159 |
| 2014 | 22.38 | 161 |
| 2013 | 22.26 | 162 |
| 2012 | 22.15 | 163 |
| 2011 | 22.05 | 166 |
| 2010 | 21.94 | 166 |
| 2009 | 21.88 | 168 |
| 2008 | 21.83 | 168 |
| 2007 | 21.77 | 169 |
| 2006 | 21.69 | 167 |
| 2005 | 21.59 | 167 |
| 2004 | 21.53 | 169 |
| 2003 | 21.45 | 170 |
| 2002 | 21.35 | 172 |
| 2001 | 21.2 | 173 |
| 2000 | 20.99 | 172 |
| 1999 | 20.87 | 172 |
| 1998 | 20.69 | 172 |
| 1997 | 20.46 | 172 |
| 1996 | 20.2 | 171 |
| 1995 | 19.9 | 171 |
| 1994 | 19.69 | 171 |
| 1993 | 19.46 | 171 |
| 1992 | 19.21 | 173 |
| 1991 | 18.95 | 174 |
| 1990 | 18.66 | 174 |
| 1989 | 18.47 | 172 |
| 1988 | 18.27 | 172 |
| 1987 | 18.06 | 172 |
| 1986 | 17.85 | 172 |