| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.44 | 123 |
| 2015 | 4.47 | 120 |
| 2014 | 4.59 | 115 |
| 2013 | 4.77 | 114 |
| 2012 | 4.99 | 107 |
| 2011 | 5.21 | 101 |
| 2010 | 5.42 | 100 |
| 2009 | 5.52 | 98 |
| 2008 | 5.6 | 97 |
| 2007 | 5.66 | 94 |
| 2006 | 5.7 | 93 |
| 2005 | 5.71 | 91 |
| 2004 | 5.63 | 92 |
| 2003 | 5.51 | 93 |
| 2002 | 5.36 | 94 |
| 2001 | 5.21 | 94 |
| 2000 | 5.07 | 93 |
| 1999 | 4.95 | 95 |
| 1998 | 4.85 | 96 |
| 1997 | 4.76 | 97 |
| 1996 | 4.67 | 96 |
| 1995 | 4.58 | 97 |
| 1994 | 4.51 | 97 |
| 1993 | 4.44 | 95 |
| 1992 | 4.36 | 95 |
| 1991 | 4.32 | 95 |
| 1990 | 4.32 | 93 |
| 1989 | 4.32 | 89 |
| 1988 | 4.37 | 86 |
| 1987 | 4.47 | 83 |
| 1986 | 4.58 | 79 |