| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1805 | 30 |
| 2015 | 1947 | 33 |
| 2014 | 2142 | 33 |
| 2013 | 2242 | 30 |
| 2012 | 2429 | 28 |
| 2011 | 2535 | 27 |
| 2010 | 2290 | 25 |
| 2009 | 1791 | 30 |
| 2008 | 1694 | 32 |
| 2007 | 1802 | 27 |
| 2006 | 1649 | 26 |
| 2005 | 1549 | 25 |
| 2004 | 1374 | 26 |
| 2003 | 1053 | 26 |
| 2002 | 673 | 31 |
| 2001 | 710 | 29 |
| 2000 | 805 | 27 |
| 1999 | 810 | 26 |
| 1998 | 802 | 26 |
| 1997 | 883 | 24 |
| 1996 | 842 | 26 |
| 1995 | 872 | 23 |
| 1994 | 773 | 20 |
| 1993 | 745 | 20 |
| 1992 | 745 | 21 |
| 1991 | 649 | 22 |
| 1990 | 583 | 22 |
| 1989 | 632 | 14 |
| 1988 | 571 | 16 |
| 1987 | 525 | 14 |
| 1986 | 389 | 16 |