| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 5473 | 6 |
| 2015 | 5593 | 7 |
| 2014 | 6006 | 7 |
| 2013 | 6214 | 7 |
| 2012 | 5535 | 8 |
| 2011 | 5109 | 10 |
| 2010 | 4414 | 9 |
| 2009 | 3522 | 10 |
| 2008 | 3930 | 13 |
| 2007 | 3701 | 12 |
| 2006 | 3358 | 11 |
| 2005 | 3002 | 11 |
| 2004 | 2729 | 11 |
| 2003 | 2332 | 11 |
| 2002 | 2080 | 10 |
| 2001 | 2020 | 10 |
| 2000 | 2140 | 10 |
| 1999 | 1807 | 9 |
| 1998 | 1868 | 9 |
| 1997 | 2133 | 6 |
| 1996 | 2013 | 7 |
| 1995 | 1961 | 7 |
| 1994 | 1659 | 7 |
| 1993 | 1413 | 7 |
| 1992 | 1273 | 9 |
| 1991 | 1039 | 10 |
| 1990 | 847 | 11 |
| 1989 | 777 | 10 |
| 1988 | 703 | 10 |
| 1987 | 507 | 10 |
| 1986 | 359 | 12 |