| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 44584 | 1 |
| 2015 | 45289 | 1 |
| 2014 | 45182 | 1 |
| 2013 | 42280 | 1 |
| 2012 | 38757 | 1 |
| 2011 | 35137 | 1 |
| 2010 | 28304 | 2 |
| 2009 | 23446 | 2 |
| 2008 | 21581 | 2 |
| 2007 | 16646 | 2 |
| 2006 | 13089 | 3 |
| 2005 | 10749 | 3 |
| 2004 | 8975 | 3 |
| 2003 | 7575 | 3 |
| 2002 | 6537 | 3 |
| 2001 | 6000 | 3 |
| 2000 | 5516 | 3 |
| 1999 | 4962 | 4 |
| 1998 | 4713 | 4 |
| 1997 | 4529 | 4 |
| 1996 | 4069 | 3 |
| 1995 | 3434 | 4 |
| 1994 | 2605 | 6 |
| 1993 | 2054 | 6 |
| 1992 | 1841 | 7 |
| 1991 | 1591 | 8 |
| 1990 | 1481 | 7 |
| 1989 | 1478 | 5 |
| 1988 | 1360 | 3 |
| 1987 | 1183 | 4 |
| 1986 | 1309 | 3 |