| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1973 | 19 |
| 2015 | 1966 | 22 |
| 2014 | 2237 | 24 |
| 2013 | 2076 | 24 |
| 2012 | 1991 | 24 |
| 2011 | 2106 | 22 |
| 2010 | 1780 | 22 |
| 2009 | 1495 | 21 |
| 2008 | 2088 | 18 |
| 2007 | 1657 | 19 |
| 2006 | 1270 | 25 |
| 2005 | 1016 | 25 |
| 2004 | 897 | 25 |
| 2003 | 683 | 25 |
| 2002 | 553 | 24 |
| 2001 | 502 | 26 |
| 2000 | 490 | 26 |
| 1999 | 459 | 25 |
| 1998 | 471 | 23 |
| 1997 | 423 | 27 |
| 1996 | 371 | 28 |
| 1995 | 291 | 34 |
| 1994 | 227 | 36 |
| 1993 | 202 | 35 |
| 1992 | 185 | 36 |
| 1991 | 184 | 36 |
| 1990 | 116 | 38 |
| 1989 | 103 | 40 |
| 1988 | 122 | 38 |
| 1987 | 109 | 37 |
| 1986 | 112 | 31 |