| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1571 | 25 |
| 2015 | 1561 | 28 |
| 2014 | 1820 | 26 |
| 2013 | 1833 | 27 |
| 2012 | 1785 | 27 |
| 2011 | 1914 | 25 |
| 2010 | 1590 | 26 |
| 2009 | 1431 | 22 |
| 2008 | 1843 | 21 |
| 2007 | 1630 | 21 |
| 2006 | 1372 | 21 |
| 2005 | 1273 | 17 |
| 2004 | 1199 | 16 |
| 2003 | 995 | 17 |
| 2002 | 783 | 18 |
| 2001 | 746 | 17 |
| 2000 | 724 | 19 |
| 1999 | 713 | 17 |
| 1998 | 695 | 17 |
| 1997 | 657 | 20 |
| 1996 | 685 | 20 |
| 1995 | 662 | 19 |
| 1994 | 552 | 19 |
| 1993 | 491 | 17 |
| 1992 | 541 | 17 |
| 1991 | 508 | 17 |
| 1990 | 491 | 17 |
| 1989 | 390 | 18 |
| 1988 | 362 | 17 |
| 1987 | 327 | 16 |
| 1986 | 269 | 16 |