| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 3844 | 106 |
| 2015 | 4133 | 107 |
| 2014 | 5471 | 99 |
| 2013 | 5472 | 106 |
| 2012 | 5565 | 106 |
| 2011 | 5432 | 108 |
| 2010 | 4463 | 111 |
| 2009 | 3869 | 113 |
| 2008 | 4905 | 104 |
| 2007 | 3935 | 110 |
| 2006 | 3465 | 108 |
| 2005 | 3100 | 108 |
| 2004 | 2599 | 111 |
| 2003 | 2094 | 114 |
| 2002 | 1774 | 114 |
| 2001 | 1733 | 109 |
| 2000 | 1757 | 106 |
| 1999 | 1581 | 113 |
| 1998 | 1588 | 113 |
| 1997 | 1612 | 110 |
| 1996 | 1596 | 110 |
| 1995 | 1445 | 112 |
| 1994 | 1500 | 96 |
| 1993 | 1798 | 87 |
| 1992 | 1766 | 86 |
| 1991 | 1722 | 84 |
| 1990 | 2394 | 75 |
| 1989 | 2203 | 71 |
| 1988 | 2403 | 66 |
| 1987 | 2790 | 60 |
| 1986 | 2741 | 60 |