| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2829 | 15 |
| 2015 | 2967 | 16 |
| 2014 | 3662 | 15 |
| 2013 | 3730 | 15 |
| 2012 | 3797 | 15 |
| 2011 | 3658 | 15 |
| 2010 | 3108 | 15 |
| 2009 | 2458 | 15 |
| 2008 | 3198 | 15 |
| 2007 | 2632 | 15 |
| 2006 | 2387 | 15 |
| 2005 | 2000 | 15 |
| 2004 | 1736 | 15 |
| 2003 | 1362 | 15 |
| 2002 | 1164 | 15 |
| 2001 | 1160 | 15 |
| 2000 | 1345 | 15 |
| 1999 | 1111 | 15 |
| 1998 | 1017 | 14 |
| 1997 | 1324 | 13 |
| 1996 | 1313 | 13 |
| 1995 | 1245 | 13 |
| 1994 | 1027 | 12 |
| 1993 | 852 | 12 |
| 1992 | 722 | 14 |
| 1991 | 661 | 14 |
| 1990 | 608 | 14 |
| 1989 | 497 | 15 |
| 1988 | 439 | 16 |
| 1987 | 326 | 17 |
| 1986 | 255 | 18 |