| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 25.88 | 166 |
| 2015 | 25.76 | 166 |
| 2014 | 25.62 | 165 |
| 2013 | 25.68 | 165 |
| 2012 | 25.69 | 165 |
| 2011 | 26.49 | 163 |
| 2010 | 27.31 | 162 |
| 2009 | 28.95 | 161 |
| 2008 | 30.33 | 159 |
| 2007 | 32.08 | 156 |
| 2006 | 33.32 | 155 |
| 2005 | 34.93 | 140 |
| 2004 | 34.75 | 143 |
| 2003 | 34.16 | 144 |
| 2002 | 33.42 | 148 |
| 2001 | 33.06 | 150 |
| 2000 | 32.39 | 153 |
| 1999 | 32.69 | 150 |
| 1998 | 32.77 | 148 |
| 1997 | 33.25 | 145 |
| 1996 | 33.65 | 139 |
| 1995 | 33.96 | 135 |
| 1994 | 34.32 | 133 |
| 1993 | 34 | 133 |
| 1992 | 33.75 | 134 |
| 1991 | 33.47 | 135 |