| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 4070 | 15 |
| 2015 | 3732 | 18 |
| 2014 | 3763 | 18 |
| 2013 | 3788 | 19 |
| 2012 | 3752 | 19 |
| 2011 | 3624 | 19 |
| 2010 | 3071 | 20 |
| 2009 | 2000 | 27 |
| 2008 | 1911 | 28 |
| 2007 | 1707 | 28 |
| 2006 | 1461 | 27 |
| 2005 | 1153 | 29 |
| 2004 | 1054 | 30 |
| 2003 | 964 | 28 |
| 2002 | 784 | 28 |
| 2001 | 614 | 33 |
| 2000 | 635 | 32 |
| 1999 | 518 | 34 |
| 1998 | 350 | 42 |
| 1997 | 854 | 26 |
| 1996 | 907 | 23 |
| 1995 | 830 | 25 |
| 1994 | 744 | 21 |
| 1993 | 671 | 23 |
| 1992 | 518 | 25 |
| 1991 | 455 | 25 |
| 1990 | 415 | 25 |
| 1989 | 373 | 19 |
| 1988 | 334 | 20 |
| 1987 | 307 | 19 |