| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2153 | 19 |
| 2015 | 2144 | 20 |
| 2014 | 2275 | 23 |
| 2013 | 2285 | 23 |
| 2012 | 2291 | 23 |
| 2011 | 2226 | 24 |
| 2010 | 1933 | 24 |
| 2009 | 1524 | 24 |
| 2008 | 1778 | 26 |
| 2007 | 1539 | 24 |
| 2006 | 1297 | 24 |
| 2005 | 1109 | 24 |
| 2004 | 962 | 24 |
| 2003 | 803 | 23 |
| 2002 | 681 | 23 |
| 2001 | 650 | 23 |
| 2000 | 691 | 22 |
| 1999 | 584 | 22 |
| 1998 | 545 | 23 |
| 1997 | 574 | 23 |
| 1996 | 557 | 23 |
| 1995 | 564 | 21 |
| 1994 | 453 | 21 |
| 1993 | 370 | 24 |
| 1992 | 325 | 26 |
| 1991 | 284 | 26 |
| 1990 | 231 | 30 |
| 1989 | 201 | 29 |
| 1988 | 160 | 30 |
| 1987 | 117 | 33 |
| 1986 | 89 | 36 |