| 时间 | 值 | 世界排名 |
|---|---|---|
| 2016 | 126.1 | 54 |
| 2015 | 121.6 | 53 |
| 2014 | 134.1 | 53 |
| 2013 | 147.7 | 52 |
| 2012 | 79.9 | 60 |
| 2011 | 66.8 | 61 |
| 2010 | 71.9 | 61 |
| 2009 | 0 | 142 |
| 2008 | 38.5 | 69 |
| 2007 | 35.2 | 68 |
| 2006 | 35.9 | 69 |
| 2005 | 37.2 | 69 |
| 2004 | 34.5 | 75 |
| 2003 | 20.4 | 85 |
| 2002 | 22.2 | 83 |
| 2001 | 25.2 | 83 |
| 2000 | 22 | 86 |
| 1999 | 15 | 93 |
| 1998 | 11.9 | 106 |
| 1997 | 32 | 78 |
| 1996 | 18.3 | 84 |
| 1995 | 8.9 | 105 |
| 1994 | 7 | 112 |
| 1993 | 5.4 | 111 |
| 1992 | 5 | 112 |
| 1991 | 3.6 | 111 |
| 1990 | 2.8 | 117 |
| 1989 | 14.4 | 94 |
| 1988 | 14.1 | 88 |
| 1987 | 14.8 | 88 |
| 1986 | 9.3 | 98 |