| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.79 | 10 |
| 2015 | 4.85 | 11 |
| 2014 | 4.91 | 13 |
| 2013 | 4.95 | 15 |
| 2012 | 5 | 14 |
| 2011 | 5.01 | 15 |
| 2010 | 5.03 | 13 |
| 2009 | 5.04 | 16 |
| 2008 | 5.08 | 16 |
| 2007 | 4.05 | 36 |
| 2006 | 3.99 | 40 |
| 2005 | 4.03 | 36 |
| 2004 | 4.09 | 35 |
| 2003 | 4.13 | 34 |
| 2002 | 4.16 | 34 |
| 2001 | 4.16 | 31 |
| 2000 | 4.17 | 30 |
| 1999 | 4.17 | 28 |
| 1998 | 4.22 | 26 |
| 1997 | 4.31 | 29 |
| 1996 | 4.46 | 25 |
| 1995 | 4.79 | 17 |
| 1994 | 5.39 | 13 |
| 1993 | 5.5 | 15 |
| 1992 | 5.52 | 18 |
| 1991 | 5.47 | 21 |
| 1990 | 5.37 | 27 |
| 1989 | 5.27 | 26 |
| 1988 | 5.2 | 32 |
| 1987 | 5.16 | 40 |
| 1986 | 5.14 | 43 |