| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 5.41 | 198 |
| 2015 | 5.48 | 198 |
| 2014 | 5.56 | 197 |
| 2013 | 5.64 | 197 |
| 2012 | 5.73 | 197 |
| 2011 | 5.81 | 198 |
| 2010 | 5.9 | 198 |
| 2009 | 5.99 | 197 |
| 2008 | 6.08 | 196 |
| 2007 | 6.18 | 197 |
| 2006 | 6.27 | 197 |
| 2005 | 6.37 | 197 |
| 2004 | 6.47 | 199 |
| 2003 | 6.57 | 199 |
| 2002 | 6.67 | 199 |
| 2001 | 6.77 | 199 |
| 2000 | 6.87 | 199 |
| 1999 | 7.05 | 199 |
| 1998 | 7.27 | 198 |
| 1997 | 7.49 | 199 |
| 1996 | 7.71 | 199 |
| 1995 | 7.94 | 199 |
| 1994 | 8.18 | 199 |
| 1993 | 8.43 | 199 |
| 1992 | 8.68 | 199 |
| 1991 | 8.94 | 199 |
| 1990 | 9.2 | 199 |
| 1989 | 9 | 197 |
| 1988 | 8.65 | 198 |
| 1987 | 8.31 | 199 |
| 1986 | 7.98 | 199 |