| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1524 | 27 |
| 2015 | 1528 | 28 |
| 2014 | 1782 | 26 |
| 2013 | 1752 | 27 |
| 2012 | 1666 | 28 |
| 2011 | 1774 | 28 |
| 2010 | 1526 | 28 |
| 2009 | 1370 | 25 |
| 2008 | 1813 | 25 |
| 2007 | 1636 | 22 |
| 2006 | 1368 | 23 |
| 2005 | 1252 | 21 |
| 2004 | 1184 | 21 |
| 2003 | 971 | 20 |
| 2002 | 787 | 21 |
| 2001 | 708 | 21 |
| 2000 | 677 | 23 |
| 1999 | 661 | 21 |
| 1998 | 641 | 21 |
| 1997 | 598 | 22 |
| 1996 | 582 | 22 |
| 1995 | 577 | 20 |
| 1994 | 450 | 22 |
| 1993 | 407 | 21 |
| 1992 | 445 | 19 |
| 1991 | 411 | 20 |
| 1990 | 413 | 18 |
| 1989 | 319 | 20 |
| 1988 | 310 | 19 |
| 1987 | 272 | 18 |
| 1986 | 225 | 17 |