| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 754 | 36 |
| 2015 | 766 | 35 |
| 2014 | 807 | 37 |
| 2013 | 721 | 44 |
| 2012 | 628 | 47 |
| 2011 | 666 | 45 |
| 2010 | 603 | 44 |
| 2009 | 627 | 38 |
| 2008 | 840 | 40 |
| 2007 | 838 | 34 |
| 2006 | 731 | 33 |
| 2005 | 686 | 31 |
| 2004 | 618 | 30 |
| 2003 | 539 | 27 |
| 2002 | 524 | 25 |
| 2001 | 506 | 24 |
| 2000 | 510 | 25 |
| 1999 | 468 | 24 |
| 1998 | 432 | 26 |
| 1997 | 377 | 30 |
| 1996 | 343 | 31 |
| 1995 | 323 | 30 |
| 1994 | 256 | 29 |
| 1993 | 212 | 33 |
| 1992 | 225 | 32 |
| 1991 | 208 | 32 |
| 1990 | 207 | 31 |
| 1989 | 174 | 30 |
| 1988 | 156 | 32 |
| 1987 | 136 | 32 |
| 1986 | 116 | 28 |