| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 0.8 | 117 |
| 2015 | 0.8 | 119 |
| 2014 | 0.7 | 123 |
| 2013 | 32.7 | 70 |
| 2012 | 47.3 | 67 |
| 2011 | 44.7 | 66 |
| 2010 | 25.1 | 72 |
| 2009 | 6.8 | 92 |
| 2008 | 7.5 | 94 |
| 2007 | 7.7 | 93 |
| 2006 | 8.5 | 92 |
| 2005 | 22.3 | 77 |
| 2004 | 20.8 | 88 |
| 2003 | 18.5 | 89 |
| 2002 | 25.8 | 79 |
| 2001 | 158.2 | 50 |
| 2000 | 163 | 51 |
| 1999 | 158.2 | 49 |
| 1998 | 156.9 | 46 |
| 1997 | 153.1 | 48 |
| 1996 | 152.9 | 44 |
| 1995 | 144.4 | 43 |
| 1994 | 130.8 | 47 |
| 1993 | 113.7 | 46 |
| 1992 | 93.5 | 48 |
| 1991 | 87 | 46 |
| 1990 | 64.9 | 50 |
| 1989 | 64.6 | 51 |
| 1988 | 73.4 | 48 |
| 1987 | 66.9 | 49 |
| 1986 | 12.5 | 87 |