| 时间 | 值 （%） | 世界排名 |
|---|---|---|
| 2016 | 4.33 | 126 |
| 2015 | 4.23 | 126 |
| 2014 | 4.21 | 125 |
| 2013 | 4.25 | 124 |
| 2012 | 4.33 | 122 |
| 2011 | 4.42 | 119 |
| 2010 | 4.51 | 117 |
| 2009 | 4.61 | 116 |
| 2008 | 4.7 | 111 |
| 2007 | 4.77 | 110 |
| 2006 | 4.82 | 110 |
| 2005 | 4.84 | 105 |
| 2004 | 4.85 | 102 |
| 2003 | 4.82 | 103 |
| 2002 | 4.76 | 103 |
| 2001 | 4.69 | 103 |
| 2000 | 4.62 | 104 |
| 1999 | 4.58 | 104 |
| 1998 | 4.56 | 103 |
| 1997 | 4.54 | 102 |
| 1996 | 4.51 | 101 |
| 1995 | 4.45 | 102 |
| 1994 | 4.4 | 101 |
| 1993 | 4.33 | 101 |
| 1992 | 4.24 | 100 |
| 1991 | 4.16 | 100 |
| 1990 | 4.11 | 101 |
| 1989 | 4.13 | 98 |
| 1988 | 4.19 | 94 |
| 1987 | 4.27 | 87 |
| 1986 | 4.37 | 86 |