| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 28.71 | 163 |
| 2015 | 28.74 | 163 |
| 2014 | 28.7 | 163 |
| 2013 | 28.51 | 163 |
| 2012 | 28.21 | 163 |
| 2011 | 27.92 | 164 |
| 2010 | 27.6 | 164 |
| 2009 | 27.09 | 165 |
| 2008 | 26.45 | 169 |
| 2007 | 26.1 | 169 |
| 2006 | 25.79 | 169 |
| 2005 | 25.47 | 169 |
| 2004 | 25.63 | 168 |
| 2003 | 25.69 | 168 |
| 2002 | 25.44 | 168 |
| 2001 | 25.22 | 168 |
| 2000 | 25.04 | 168 |
| 1999 | 24.66 | 168 |
| 1998 | 24.35 | 169 |
| 1997 | 24.12 | 169 |
| 1996 | 23.96 | 168 |
| 1995 | 23.81 | 168 |
| 1991 | 24.07 | 166 |
| 1990 | 23.73 | 167 |