| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 7680 | 4 |
| 2015 | 7597 | 6 |
| 2014 | 8783 | 6 |
| 2013 | 8563 | 6 |
| 2012 | 8226 | 6 |
| 2011 | 8693 | 5 |
| 2010 | 7391 | 6 |
| 2009 | 6868 | 4 |
| 2008 | 8518 | 6 |
| 2007 | 7568 | 5 |
| 2006 | 6513 | 6 |
| 2005 | 5902 | 6 |
| 2004 | 5371 | 5 |
| 2003 | 4532 | 4 |
| 2002 | 3807 | 5 |
| 2001 | 3666 | 5 |
| 2000 | 3707 | 5 |
| 1999 | 3528 | 5 |
| 1998 | 3506 | 5 |
| 1997 | 3263 | 5 |
| 1996 | 3408 | 5 |
| 1995 | 3359 | 4 |
| 1994 | 2805 | 5 |
| 1993 | 2522 | 5 |
| 1992 | 2889 | 4 |
| 1991 | 2742 | 4 |
| 1990 | 2756 | 4 |
| 1989 | 2286 | 5 |
| 1988 | 2137 | 5 |
| 1987 | 1928 | 3 |
| 1986 | 1577 | 3 |