| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 21.07 | 164 |
| 2015 | 20.5 | 164 |
| 2014 | 20.06 | 164 |
| 2013 | 20.64 | 162 |
| 2012 | 21.61 | 159 |
| 2011 | 22.09 | 159 |
| 2010 | 24.73 | 149 |
| 2009 | 27.55 | 139 |
| 2008 | 29.59 | 138 |
| 2007 | 27.22 | 143 |
| 2006 | 25.7 | 149 |
| 2005 | 23.57 | 163 |
| 2004 | 23.78 | 163 |
| 2003 | 22.22 | 168 |
| 2002 | 21.18 | 170 |
| 2001 | 21.68 | 170 |
| 2000 | 20.39 | 174 |
| 1999 | 23.13 | 168 |
| 1998 | 26.05 | 159 |
| 1997 | 26.5 | 157 |
| 1996 | 28.17 | 149 |
| 1995 | 27.9 | 154 |
| 1994 | 25.71 | 164 |
| 1993 | 25.8 | 162 |
| 1992 | 34.2 | 141 |
| 1991 | 29.97 | 154 |