| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 25.59 | 180 |
| 2015 | 26.94 | 184 |
| 2014 | 29.59 | 185 |
| 2013 | 29.65 | 184 |
| 2012 | 27.41 | 182 |
| 2011 | 24.68 | 180 |
| 2010 | 22.1 | 177 |
| 2009 | 29.71 | 183 |
| 2008 | 37.6 | 186 |
| 2007 | 20.96 | 177 |
| 2006 | 20.3 | 176 |
| 2005 | 23.13 | 178 |
| 2004 | 21.9 | 175 |
| 2003 | 20.45 | 174 |
| 2002 | 21.41 | 176 |
| 2001 | 35.31 | 185 |
| 2000 | 20.3 | 176 |
| 1999 | 19.77 | 174 |
| 1998 | 19.64 | 174 |
| 1997 | 19.5 | 170 |
| 1996 | 19.53 | 172 |
| 1995 | 19.47 | 171 |
| 1994 | 19.4 | 168 |
| 1993 | 19.09 | 165 |
| 1992 | 19.05 | 167 |
| 1991 | 19 | 171 |