| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3298 | 13 |
| 2015 | 3466 | 14 |
| 2014 | 4093 | 14 |
| 2013 | 4102 | 14 |
| 2012 | 4084 | 14 |
| 2011 | 4095 | 14 |
| 2010 | 3519 | 14 |
| 2009 | 2698 | 14 |
| 2008 | 3382 | 14 |
| 2007 | 2993 | 14 |
| 2006 | 2718 | 14 |
| 2005 | 2296 | 14 |
| 2004 | 1986 | 13 |
| 2003 | 1599 | 14 |
| 2002 | 1252 | 15 |
| 2001 | 1218 | 14 |
| 2000 | 1378 | 14 |
| 1999 | 1147 | 14 |
| 1998 | 1099 | 15 |
| 1997 | 1250 | 13 |
| 1996 | 1250 | 13 |
| 1995 | 1183 | 13 |
| 1994 | 968 | 12 |
| 1993 | 740 | 13 |
| 1992 | 635 | 15 |
| 1991 | 590 | 15 |
| 1990 | 527 | 16 |
| 1989 | 447 | 15 |
| 1988 | 393 | 16 |
| 1987 | 287 | 16 |
| 1986 | 225 | 18 |