| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1227 | 19 |
| 2015 | 1376 | 21 |
| 2014 | 1278 | 29 |
| 2013 | 1325 | 31 |
| 2012 | 1334 | 28 |
| 2011 | 1337 | 28 |
| 2010 | 1070 | 29 |
| 2009 | 842 | 32 |
| 2008 | 950 | 32 |
| 2007 | 788 | 32 |
| 2006 | 679 | 34 |
| 2005 | 569 | 36 |
| 2004 | 474 | 37 |
| 2003 | 417 | 35 |
| 2002 | 299 | 38 |
| 2001 | 678 | 19 |
| 2000 | 739 | 18 |
| 1999 | 743 | 17 |
| 1998 | 799 | 17 |
| 1997 | 796 | 18 |
| 1996 | 724 | 20 |
| 1995 | 679 | 21 |
| 1994 | 689 | 16 |
| 1993 | 647 | 15 |
| 1992 | 702 | 16 |
| 1991 | 621 | 17 |
| 1990 | 509 | 17 |
| 1989 | 325 | 18 |
| 1988 | 486 | 10 |
| 1987 | 420 | 10 |
| 1986 | 415 | 10 |