| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 2.4 | 52 |
| 2015 | 1.2 | 128 |
| 2014 | 1.5 | 124 |
| 2013 | 1.7 | 133 |
| 2012 | 1 | 151 |
| 2011 | 1.3 | 140 |
| 2010 | 1.3 | 143 |
| 2009 | 2.5 | 129 |
| 2008 | 2.4 | 106 |
| 2007 | 2.4 | 117 |
| 2006 | 1.5 | 132 |
| 2005 | 1.9 | 123 |
| 2004 | 1.5 | 125 |
| 2003 | 1.5 | 125 |
| 2002 | 1.3 | 130 |
| 2001 | 1.6 | 115 |
| 2000 | 2.2 | 93 |
| 1999 | 4.1 | 52 |
| 1998 | 2.6 | 79 |
| 1997 | 3.7 | 52 |
| 1996 | 3.9 | 40 |
| 1995 | 3.2 | 51 |
| 1994 | 4.1 | 40 |
| 1993 | 3.8 | 45 |
| 1992 | 3.1 | 54 |
| 1991 | 3 | 58 |
| 1990 | 3.2 | 43 |
| 1989 | 2.3 | 68 |
| 1988 | 2 | 78 |
| 1987 | 2.2 | 79 |
| 1986 | 2.9 | 56 |