| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2015 | 1018 | 116 |
| 2014 | 987 | 118 |
| 2013 | 959 | 122 |
| 2012 | 934 | 123 |
| 2011 | 910 | 124 |
| 2010 | 887 | 139 |
| 2009 | 872 | 122 |
| 2008 | 870 | 122 |
| 2007 | 866 | 121 |
| 2006 | 851 | 118 |
| 2005 | 842 | 114 |
| 2004 | 839 | 111 |
| 2003 | 835 | 108 |
| 2002 | 809 | 108 |
| 2001 | 796 | 104 |
| 2000 | 788 | 102 |
| 1999 | 778 | 98 |
| 1998 | 765 | 99 |
| 1997 | 751 | 98 |
| 1996 | 725 | 98 |
| 1995 | 707 | 96 |
| 1994 | 715 | 93 |
| 1993 | 729 | 90 |
| 1992 | 645 | 90 |
| 1991 | 737 | 87 |
| 1990 | 777 | 84 |
| 1989 | 818 | 70 |
| 1988 | 973 | 64 |
| 1987 | 1138 | 61 |
| 1986 | 1122 | 60 |