| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 1.8 | 107 |
| 2015 | 1.5 | 112 |
| 2014 | 1.7 | 113 |
| 2013 | 1.7 | 108 |
| 2012 | 1.9 | 110 |
| 2011 | 2.3 | 108 |
| 2010 | 2.1 | 106 |
| 2009 | 1.7 | 112 |
| 2008 | 2.3 | 109 |
| 2007 | 3 | 104 |
| 2006 | 3.4 | 101 |
| 2005 | 3.1 | 102 |
| 2004 | 2.6 | 112 |
| 2003 | 0.6 | 127 |
| 2002 | 0 | 140 |
| 2001 | 2.4 | 123 |
| 2000 | 6 | 118 |
| 1999 | 12.4 | 105 |
| 1998 | 30.4 | 77 |
| 1997 | 31.6 | 79 |
| 1996 | 23.9 | 80 |
| 1995 | 29.9 | 75 |
| 1994 | 30.9 | 70 |
| 1993 | 27.1 | 70 |
| 1992 | 14.4 | 97 |
| 1991 | 5.9 | 101 |
| 1990 | 8 | 105 |
| 1989 | 7.7 | 105 |
| 1988 | 9 | 100 |
| 1987 | 9.6 | 99 |
| 1986 | 8.7 | 100 |