| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 26.14 | 167 |
| 2015 | 26.05 | 167 |
| 2014 | 25.91 | 168 |
| 2013 | 26.27 | 166 |
| 2012 | 26.45 | 166 |
| 2011 | 25.26 | 169 |
| 2010 | 26.89 | 166 |
| 2009 | 26.75 | 166 |
| 2008 | 26.66 | 167 |
| 2007 | 26.54 | 167 |
| 2006 | 26.33 | 168 |
| 2005 | 26.04 | 168 |
| 2004 | 25.6 | 169 |
| 2003 | 25.13 | 170 |
| 2002 | 24.47 | 170 |
| 2001 | 23.97 | 170 |
| 2000 | 23.53 | 171 |
| 1999 | 22.95 | 172 |
| 1998 | 22.42 | 171 |
| 1997 | 21.89 | 171 |
| 1996 | 21.3 | 173 |
| 1995 | 20.59 | 173 |
| 1994 | 20.15 | 172 |
| 1993 | 19.51 | 172 |
| 1992 | 18.92 | 172 |
| 1991 | 18.37 | 174 |
| 1990 | 17.74 | 173 |