| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2205 | 20 |
| 2015 | 2296 | 24 |
| 2014 | 2546 | 24 |
| 2013 | 2744 | 22 |
| 2012 | 2732 | 22 |
| 2011 | 2552 | 22 |
| 2010 | 2073 | 22 |
| 2009 | 1545 | 27 |
| 2008 | 2011 | 27 |
| 2007 | 1604 | 28 |
| 2006 | 1451 | 25 |
| 2005 | 1315 | 23 |
| 2004 | 1062 | 24 |
| 2003 | 840 | 24 |
| 2002 | 730 | 24 |
| 2001 | 686 | 24 |
| 2000 | 714 | 23 |
| 1999 | 561 | 25 |
| 1998 | 481 | 29 |
| 1997 | 703 | 23 |
| 1996 | 828 | 21 |
| 1995 | 816 | 20 |
| 1994 | 631 | 21 |
| 1993 | 528 | 22 |
| 1992 | 457 | 23 |
| 1991 | 418 | 24 |
| 1990 | 355 | 24 |
| 1989 | 271 | 25 |
| 1988 | 212 | 26 |
| 1987 | 143 | 36 |
| 1986 | 102 | 40 |