| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 24.05 | 148 |
| 2015 | 23.94 | 147 |
| 2014 | 23.65 | 149 |
| 2013 | 23.65 | 150 |
| 2012 | 23.66 | 148 |
| 2011 | 23.83 | 148 |
| 2010 | 23.52 | 155 |
| 2009 | 23.03 | 158 |
| 2008 | 22.37 | 167 |
| 2007 | 21.65 | 169 |
| 2006 | 22.59 | 168 |
| 2005 | 23.73 | 160 |
| 2004 | 24.66 | 158 |
| 2003 | 25.45 | 155 |
| 2002 | 26.11 | 153 |
| 2001 | 26.7 | 157 |
| 2000 | 27.26 | 156 |
| 1999 | 28.84 | 148 |
| 1998 | 25.16 | 162 |
| 1997 | 26 | 158 |
| 1996 | 26.93 | 155 |
| 1995 | 28.05 | 153 |
| 1994 | 28.12 | 152 |
| 1993 | 29.29 | 153 |
| 1992 | 30.32 | 155 |
| 1991 | 31.36 | 151 |