| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 24.52 | 148 |
| 2015 | 24.75 | 148 |
| 2014 | 24.97 | 147 |
| 2013 | 25.2 | 147 |
| 2012 | 25.42 | 148 |
| 2011 | 25.64 | 149 |
| 2010 | 25.86 | 150 |
| 2009 | 26.08 | 150 |
| 2008 | 26.3 | 150 |
| 2007 | 26.51 | 149 |
| 2006 | 26.72 | 149 |
| 2005 | 26.94 | 149 |
| 2004 | 27.16 | 149 |
| 2003 | 27.37 | 150 |
| 2002 | 27.59 | 150 |
| 2001 | 27.81 | 151 |
| 2000 | 28.03 | 151 |
| 1999 | 28.25 | 151 |
| 1998 | 28.48 | 151 |
| 1997 | 28.81 | 151 |
| 1996 | 29.3 | 149 |
| 1995 | 29.78 | 148 |
| 1994 | 30.28 | 148 |
| 1993 | 30.77 | 148 |
| 1992 | 31.27 | 146 |
| 1991 | 31.78 | 147 |
| 1990 | 32.29 | 147 |