| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3025 | 19 |
| 2015 | 3231 | 20 |
| 2014 | 2786 | 24 |
| 2013 | 2976 | 23 |
| 2012 | 2930 | 23 |
| 2011 | 2747 | 24 |
| 2010 | 2181 | 27 |
| 2009 | 1775 | 31 |
| 2008 | 1817 | 29 |
| 2007 | 1424 | 32 |
| 2006 | 1134 | 34 |
| 2005 | 964 | 34 |
| 2004 | 788 | 34 |
| 2003 | 645 | 34 |
| 2002 | 523 | 37 |
| 2001 | 1708 | 16 |
| 2000 | 1761 | 16 |
| 1999 | 1756 | 16 |
| 1998 | 1798 | 15 |
| 1997 | 1747 | 16 |
| 1996 | 1635 | 17 |
| 1995 | 1569 | 16 |
| 1994 | 1553 | 14 |
| 1993 | 1445 | 14 |
| 1992 | 1449 | 15 |
| 1991 | 1149 | 15 |
| 1990 | 790 | 17 |
| 1989 | 368 | 20 |
| 1988 | 663 | 14 |
| 1987 | 601 | 13 |
| 1986 | 608 | 10 |