| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 30.8 | 161 |
| 2015 | 30.78 | 160 |
| 2014 | 30.78 | 160 |
| 2013 | 30.76 | 160 |
| 2012 | 30.75 | 159 |
| 2011 | 30.75 | 160 |
| 2010 | 30.66 | 160 |
| 2009 | 30.56 | 160 |
| 2008 | 30.28 | 160 |
| 2007 | 30.14 | 160 |
| 2006 | 29.92 | 161 |
| 2005 | 29.98 | 160 |
| 2004 | 29.87 | 160 |
| 2003 | 29.74 | 161 |
| 2002 | 29.61 | 161 |
| 2001 | 29.36 | 161 |
| 2000 | 29.17 | 161 |
| 1999 | 28.98 | 163 |
| 1998 | 28.94 | 162 |
| 1997 | 28.8 | 161 |
| 1996 | 28.48 | 162 |
| 1995 | 28.44 | 161 |
| 1994 | 28.5 | 161 |
| 1993 | 28.2 | 160 |
| 1992 | 28.16 | 159 |
| 1991 | 28.04 | 158 |
| 1990 | 27.93 | 157 |