| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 2.4 | 104 |
| 2015 | 3.4 | 99 |
| 2014 | 3.4 | 100 |
| 2013 | 3.5 | 99 |
| 2012 | 5.3 | 92 |
| 2011 | 6.4 | 93 |
| 2010 | 6.7 | 88 |
| 2009 | 6.7 | 93 |
| 2008 | 11.8 | 87 |
| 2007 | 11.9 | 87 |
| 2006 | 11.7 | 86 |
| 2005 | 11.1 | 87 |
| 2004 | 11.6 | 93 |
| 2003 | 12 | 95 |
| 2002 | 12 | 94 |
| 2001 | 13.8 | 93 |
| 2000 | 14.3 | 96 |
| 1999 | 10.5 | 109 |
| 1998 | 11.2 | 108 |
| 1997 | 9 | 110 |
| 1996 | 9.7 | 106 |
| 1995 | 13.7 | 101 |
| 1994 | 11.8 | 103 |
| 1993 | 7.3 | 109 |
| 1992 | 6.4 | 111 |
| 1991 | 5.6 | 102 |
| 1990 | 4.8 | 108 |
| 1989 | 5.5 | 107 |
| 1988 | 4.9 | 108 |
| 1987 | 4.7 | 109 |
| 1986 | 4 | 110 |