| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 5.5 | 28 |
| 2015 | 5.7 | 43 |
| 2014 | 5.8 | 34 |
| 2013 | 6.9 | 29 |
| 2012 | 7.1 | 30 |
| 2011 | 6.9 | 29 |
| 2010 | 8.4 | 24 |
| 2009 | 8.7 | 27 |
| 2008 | 5.1 | 39 |
| 2007 | 6.3 | 34 |
| 2006 | 7 | 25 |
| 2005 | 6.7 | 23 |
| 2004 | 5.3 | 38 |
| 2003 | 4.5 | 58 |
| 2002 | 4.6 | 55 |
| 2001 | 3.4 | 63 |
| 2000 | 2.8 | 73 |
| 1999 | 2.5 | 87 |
| 1998 | 3.4 | 57 |
| 1997 | 4.4 | 37 |
| 1996 | 2.9 | 66 |
| 1995 | 2.7 | 66 |
| 1994 | 4.6 | 35 |
| 1993 | 3.2 | 55 |
| 1992 | 2.9 | 58 |
| 1991 | 2.8 | 63 |
| 1990 | 1.7 | 82 |
| 1989 | 3.6 | 38 |
| 1988 | 1.9 | 80 |
| 1987 | 2.6 | 67 |
| 1986 | 2.4 | 70 |