| 时间 | 值 （美元） | 世界排名 |
|---|---|---|
| 2016 | 7179 | 75 |
| 2015 | 7389 | 81 |
| 2014 | 9692 | 75 |
| 2013 | 9680 | 78 |
| 2012 | 9774 | 78 |
| 2011 | 10716 | 74 |
| 2010 | 8754 | 80 |
| 2009 | 7604 | 79 |
| 2008 | 10094 | 73 |
| 2007 | 8353 | 75 |
| 2006 | 7028 | 75 |
| 2005 | 6741 | 75 |
| 2004 | 5686 | 75 |
| 2003 | 4892 | 74 |
| 2002 | 4103 | 78 |
| 2001 | 3976 | 77 |
| 2000 | 4116 | 76 |
| 1999 | 3883 | 77 |
| 1998 | 3828 | 77 |
| 1997 | 4663 | 66 |
| 1996 | 5111 | 65 |
| 1995 | 4566 | 64 |
| 1994 | 3959 | 61 |
| 1993 | 4245 | 57 |
| 1992 | 5566 | 53 |
| 1991 | 5523 | 52 |
| 1990 | 6251 | 53 |
| 1989 | 4518 | 52 |
| 1988 | 4254 | 51 |
| 1987 | 3743 | 51 |
| 1986 | 3990 | 51 |