| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 31.03 | 159 |
| 2015 | 31 | 159 |
| 2014 | 30.96 | 159 |
| 2013 | 30.73 | 161 |
| 2012 | 30.49 | 161 |
| 2011 | 30.34 | 161 |
| 2010 | 30.25 | 161 |
| 2009 | 30.1 | 161 |
| 2008 | 30.01 | 161 |
| 2007 | 29.97 | 161 |
| 2006 | 29.94 | 160 |
| 2005 | 29.92 | 161 |
| 2004 | 29.9 | 159 |
| 2003 | 29.99 | 160 |
| 2002 | 29.95 | 160 |
| 2001 | 29.97 | 159 |
| 2000 | 30.08 | 160 |
| 1999 | 30.13 | 159 |
| 1998 | 30.24 | 158 |
| 1997 | 30.46 | 158 |
| 1996 | 30.67 | 154 |
| 1995 | 30.83 | 152 |
| 1994 | 30.95 | 150 |
| 1993 | 31 | 149 |
| 1992 | 31.12 | 148 |
| 1991 | 31.42 | 147 |
| 1990 | 31.32 | 147 |