| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 2 | 54 |
| 2015 | 1.9 | 115 |
| 2014 | 1.7 | 119 |
| 2013 | 1.7 | 131 |
| 2012 | 2.2 | 131 |
| 2011 | 1.9 | 130 |
| 2010 | 2.2 | 131 |
| 2009 | 1.9 | 139 |
| 2008 | 1.1 | 137 |
| 2007 | 1.4 | 135 |
| 2006 | 1.4 | 135 |
| 2005 | 1.2 | 137 |
| 2004 | 1.4 | 127 |
| 2003 | 1.6 | 121 |
| 2002 | 1.6 | 124 |
| 2001 | 1.6 | 114 |
| 2000 | 1.7 | 113 |
| 1999 | 1.9 | 107 |
| 1998 | 2.2 | 92 |
| 1997 | 1.8 | 110 |
| 1996 | 1.8 | 103 |
| 1995 | 1.8 | 99 |
| 1994 | 2.1 | 91 |
| 1993 | 1.8 | 93 |
| 1992 | 1.7 | 93 |
| 1991 | 2 | 79 |
| 1990 | 2.4 | 66 |
| 1989 | 2.5 | 64 |
| 1988 | 2.9 | 53 |
| 1987 | 4 | 38 |
| 1986 | 4.2 | 36 |