| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2272 | 24 |
| 2015 | 2191 | 28 |
| 2014 | 2154 | 32 |
| 2013 | 2174 | 32 |
| 2012 | 2030 | 32 |
| 2011 | 1866 | 34 |
| 2010 | 1687 | 33 |
| 2009 | 1451 | 36 |
| 2008 | 1467 | 35 |
| 2007 | 1344 | 35 |
| 2006 | 1138 | 33 |
| 2005 | 988 | 33 |
| 2004 | 911 | 32 |
| 2003 | 799 | 32 |
| 2002 | 729 | 30 |
| 2001 | 661 | 31 |
| 2000 | 691 | 30 |
| 1999 | 691 | 30 |
| 1998 | 608 | 31 |
| 1997 | 813 | 28 |
| 1996 | 981 | 21 |
| 1995 | 904 | 21 |
| 1994 | 794 | 19 |
| 1993 | 708 | 21 |
| 1992 | 553 | 24 |
| 1991 | 478 | 24 |
| 1990 | 429 | 24 |
| 1989 | 352 | 21 |
| 1988 | 304 | 21 |
| 1987 | 257 | 20 |
| 1986 | 221 | 22 |