| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2845 | 16 |
| 2015 | 2617 | 21 |
| 2014 | 2457 | 26 |
| 2013 | 2089 | 30 |
| 2012 | 2024 | 30 |
| 2011 | 2018 | 29 |
| 2010 | 1919 | 26 |
| 2009 | 1885 | 20 |
| 2008 | 2077 | 25 |
| 2007 | 1957 | 20 |
| 2006 | 1647 | 20 |
| 2005 | 1454 | 20 |
| 2004 | 1283 | 21 |
| 2003 | 1079 | 19 |
| 2002 | 938 | 18 |
| 2001 | 870 | 18 |
| 2000 | 805 | 22 |
| 1999 | 726 | 21 |
| 1998 | 662 | 23 |
| 1997 | 540 | 27 |
| 1996 | 485 | 28 |
| 1995 | 433 | 27 |
| 1994 | 334 | 29 |
| 1993 | 279 | 31 |
| 1992 | 286 | 30 |
| 1991 | 253 | 32 |
| 1990 | 248 | 34 |
| 1989 | 210 | 34 |
| 1988 | 187 | 31 |
| 1987 | 164 | 29 |
| 1986 | 138 | 34 |