| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 10549 | 2 |
| 2015 | 10514 | 3 |
| 2014 | 12070 | 3 |
| 2013 | 11812 | 3 |
| 2012 | 11549 | 3 |
| 2011 | 12549 | 3 |
| 2010 | 10548 | 3 |
| 2009 | 9263 | 3 |
| 2008 | 11851 | 2 |
| 2007 | 10550 | 2 |
| 2006 | 9067 | 2 |
| 2005 | 7771 | 2 |
| 2004 | 7157 | 2 |
| 2003 | 6046 | 2 |
| 2002 | 4903 | 2 |
| 2001 | 4861 | 2 |
| 2000 | 4972 | 2 |
| 1999 | 4740 | 2 |
| 1998 | 4715 | 2 |
| 1997 | 4457 | 2 |
| 1996 | 4591 | 2 |
| 1995 | 4639 | 2 |
| 1994 | 3814 | 2 |
| 1993 | 3426 | 2 |
| 1992 | 4086 | 2 |
| 1991 | 3899 | 2 |
| 1990 | 3557 | 2 |
| 1989 | 2697 | 2 |
| 1988 | 2505 | 2 |
| 1987 | 2284 | 2 |
| 1986 | 1909 | 2 |