| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2178 | 21 |
| 2015 | 2537 | 22 |
| 2014 | 3358 | 20 |
| 2013 | 3445 | 19 |
| 2012 | 3220 | 20 |
| 2011 | 3201 | 19 |
| 2010 | 2602 | 19 |
| 2009 | 1876 | 21 |
| 2008 | 2327 | 20 |
| 2007 | 1672 | 25 |
| 2006 | 1292 | 28 |
| 2005 | 1056 | 28 |
| 2004 | 879 | 28 |
| 2003 | 724 | 28 |
| 2002 | 680 | 26 |
| 2001 | 815 | 22 |
| 2000 | 816 | 21 |
| 1999 | 684 | 22 |
| 1998 | 813 | 20 |
| 1997 | 847 | 20 |
| 1996 | 757 | 23 |
| 1995 | 728 | 22 |
| 1994 | 540 | 23 |
| 1993 | 398 | 25 |
| 1992 | 336 | 28 |
| 1991 | 477 | 21 |
| 1990 | 322 | 26 |
| 1989 | 232 | 30 |
| 1988 | 188 | 30 |
| 1987 | 182 | 27 |
| 1986 | 170 | 27 |