| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 10964 | 7 |
| 2015 | 10177 | 9 |
| 2014 | 9727 | 10 |
| 2013 | 8671 | 13 |
| 2012 | 8462 | 13 |
| 2011 | 8284 | 13 |
| 2010 | 7484 | 13 |
| 2009 | 6028 | 12 |
| 2008 | 5323 | 16 |
| 2007 | 5102 | 16 |
| 2006 | 3933 | 15 |
| 2005 | 3470 | 15 |
| 2004 | 2998 | 14 |
| 2003 | 2618 | 14 |
| 2002 | 2212 | 14 |
| 2001 | 2039 | 14 |
| 2000 | 1907 | 14 |
| 1999 | 1842 | 15 |
| 1998 | 1630 | 17 |
| 1997 | 1566 | 18 |
| 1996 | 1421 | 18 |
| 1995 | 1293 | 19 |
| 1994 | 1151 | 17 |
| 1993 | 1003 | 17 |
| 1992 | 1015 | 17 |
| 1991 | 947 | 17 |
| 1990 | 1095 | 14 |
| 1989 | 1013 | 10 |
| 1988 | 1002 | 8 |
| 1987 | 959 | 6 |
| 1986 | 847 | 7 |