| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 15874 | 1 |
| 2015 | 16796 | 2 |
| 2014 | 19592 | 2 |
| 2013 | 19500 | 2 |
| 2012 | 18184 | 2 |
| 2011 | 17435 | 2 |
| 2010 | 13962 | 2 |
| 2009 | 10059 | 2 |
| 2008 | 11326 | 3 |
| 2007 | 9561 | 3 |
| 2006 | 7915 | 3 |
| 2005 | 6600 | 3 |
| 2004 | 5612 | 3 |
| 2003 | 4128 | 3 |
| 2002 | 2952 | 6 |
| 2001 | 2436 | 6 |
| 2000 | 2251 | 8 |
| 1999 | 1657 | 10 |
| 1998 | 1402 | 11 |
| 1997 | 1424 | 12 |
| 1996 | 1388 | 12 |
| 1995 | 1321 | 12 |
| 1994 | 1156 | 11 |
| 1993 | 1040 | 11 |
| 1992 | 806 | 13 |
| 1991 | 638 | 15 |
| 1990 | 533 | 16 |
| 1989 | 591 | 13 |
| 1988 | 553 | 13 |
| 1987 | 432 | 13 |
| 1986 | 429 | 10 |