| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3203 | 11 |
| 2015 | 3543 | 11 |
| 2014 | 4224 | 13 |
| 2013 | 4171 | 14 |
| 2012 | 4180 | 14 |
| 2011 | 4106 | 14 |
| 2010 | 3537 | 13 |
| 2009 | 2941 | 14 |
| 2008 | 3922 | 11 |
| 2007 | 3622 | 13 |
| 2006 | 3382 | 9 |
| 2005 | 2919 | 10 |
| 2004 | 2603 | 10 |
| 2003 | 2282 | 9 |
| 2002 | 2308 | 8 |
| 2001 | 2270 | 8 |
| 2000 | 2268 | 8 |
| 1999 | 1871 | 8 |
| 1998 | 1613 | 10 |
| 1997 | 1588 | 11 |
| 1996 | 1324 | 11 |
| 1995 | 1069 | 12 |
| 1994 | 1560 | 10 |
| 1993 | 1540 | 9 |
| 1992 | 934 | 10 |
| 1991 | 806 | 12 |
| 1990 | 683 | 15 |
| 1989 | 601 | 10 |
| 1988 | 540 | 9 |
| 1987 | 481 | 9 |
| 1986 | 416 | 9 |