| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.74 | 13 |
| 2015 | 4.71 | 13 |
| 2014 | 4.71 | 13 |
| 2013 | 4.7 | 12 |
| 2012 | 4.67 | 11 |
| 2011 | 4.65 | 11 |
| 2010 | 4.62 | 10 |
| 2009 | 4.57 | 8 |
| 2008 | 4.52 | 6 |
| 2007 | 4.47 | 6 |
| 2006 | 4.42 | 6 |
| 2005 | 4.36 | 7 |
| 2004 | 4.39 | 7 |
| 2003 | 4.43 | 7 |
| 2002 | 4.47 | 8 |
| 2001 | 4.52 | 8 |
| 2000 | 4.57 | 9 |
| 1999 | 4.61 | 9 |
| 1998 | 4.65 | 9 |
| 1997 | 4.67 | 9 |
| 1996 | 4.68 | 10 |
| 1995 | 4.67 | 10 |
| 1994 | 4.6 | 9 |
| 1993 | 4.55 | 9 |
| 1992 | 4.51 | 8 |
| 1991 | 4.47 | 9 |
| 1990 | 4.45 | 9 |
| 1989 | 4.52 | 8 |
| 1988 | 4.54 | 10 |
| 1987 | 4.52 | 8 |
| 1986 | 4.46 | 7 |