| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1395 | 30 |
| 2015 | 1401 | 31 |
| 2014 | 1646 | 29 |
| 2013 | 1675 | 28 |
| 2012 | 1723 | 27 |
| 2011 | 1870 | 27 |
| 2010 | 1585 | 26 |
| 2009 | 1308 | 27 |
| 2008 | 1833 | 24 |
| 2007 | 1688 | 21 |
| 2006 | 1478 | 20 |
| 2005 | 1310 | 19 |
| 2004 | 1233 | 19 |
| 2003 | 1021 | 19 |
| 2002 | 815 | 20 |
| 2001 | 756 | 20 |
| 2000 | 871 | 18 |
| 1999 | 849 | 16 |
| 1998 | 848 | 16 |
| 1997 | 828 | 17 |
| 1996 | 849 | 17 |
| 1995 | 804 | 17 |
| 1994 | 658 | 17 |
| 1993 | 499 | 17 |
| 1992 | 561 | 16 |
| 1991 | 552 | 16 |
| 1990 | 575 | 14 |
| 1989 | 515 | 13 |
| 1988 | 497 | 13 |
| 1987 | 445 | 13 |
| 1986 | 373 | 11 |