| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3975 | 11 |
| 2015 | 4053 | 12 |
| 2014 | 4116 | 14 |
| 2013 | 3910 | 14 |
| 2012 | 3805 | 14 |
| 2011 | 3611 | 16 |
| 2010 | 3102 | 16 |
| 2009 | 2415 | 16 |
| 2008 | 3183 | 16 |
| 2007 | 2902 | 14 |
| 2006 | 2635 | 14 |
| 2005 | 2282 | 14 |
| 2004 | 2023 | 14 |
| 2003 | 1750 | 14 |
| 2002 | 1731 | 12 |
| 2001 | 1730 | 12 |
| 2000 | 1795 | 11 |
| 1999 | 1461 | 12 |
| 1998 | 1291 | 13 |
| 1997 | 1131 | 15 |
| 1996 | 920 | 15 |
| 1995 | 744 | 17 |
| 1994 | 820 | 15 |
| 1993 | 675 | 15 |
| 1992 | 642 | 16 |
| 1991 | 517 | 16 |
| 1990 | 435 | 18 |
| 1989 | 364 | 19 |
| 1988 | 294 | 19 |
| 1987 | 197 | 22 |
| 1986 | 176 | 22 |