| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.36 | 124 |
| 2015 | 4.32 | 124 |
| 2014 | 4.29 | 123 |
| 2013 | 4.27 | 123 |
| 2012 | 4.25 | 125 |
| 2011 | 4.23 | 124 |
| 2010 | 4.19 | 123 |
| 2009 | 4.18 | 124 |
| 2008 | 4.15 | 124 |
| 2007 | 4.11 | 125 |
| 2006 | 4.05 | 125 |
| 2005 | 3.99 | 126 |
| 2004 | 3.96 | 125 |
| 2003 | 3.92 | 125 |
| 2002 | 3.87 | 125 |
| 2001 | 3.82 | 124 |
| 2000 | 3.77 | 125 |
| 1999 | 3.71 | 128 |
| 1998 | 3.65 | 128 |
| 1997 | 3.59 | 129 |
| 1996 | 3.52 | 133 |
| 1995 | 3.44 | 138 |
| 1994 | 3.38 | 139 |
| 1993 | 3.31 | 139 |
| 1992 | 3.24 | 139 |
| 1991 | 3.18 | 142 |
| 1990 | 3.11 | 147 |
| 1989 | 3.05 | 149 |
| 1988 | 3 | 152 |
| 1987 | 2.94 | 156 |
| 1986 | 2.89 | 158 |