| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2015 | 3491 | 84 |
| 2014 | 3258 | 86 |
| 2013 | 3123 | 91 |
| 2012 | 2978 | 91 |
| 2011 | 2891 | 92 |
| 2010 | 2856 | 101 |
| 2009 | 2652 | 93 |
| 2008 | 2630 | 92 |
| 2007 | 2679 | 88 |
| 2006 | 2640 | 84 |
| 2005 | 2227 | 89 |
| 2004 | 2222 | 86 |
| 2003 | 2192 | 86 |
| 2002 | 2069 | 84 |
| 2001 | 2032 | 80 |
| 2000 | 1963 | 79 |
| 1999 | 1930 | 74 |
| 1998 | 1844 | 74 |
| 1997 | 1818 | 76 |
| 1996 | 1786 | 77 |
| 1995 | 1727 | 76 |
| 1994 | 1711 | 73 |
| 1993 | 1627 | 71 |
| 1992 | 1846 | 66 |
| 1991 | 2261 | 57 |
| 1990 | 2538 | 53 |
| 1989 | 2742 | 46 |
| 1988 | 2727 | 41 |
| 1987 | 2695 | 45 |
| 1986 | 2670 | 43 |