| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1684 | 24 |
| 2015 | 1760 | 25 |
| 2014 | 2089 | 25 |
| 2013 | 2059 | 25 |
| 2012 | 1964 | 25 |
| 2011 | 1875 | 26 |
| 2010 | 1646 | 25 |
| 2009 | 1238 | 26 |
| 2008 | 1563 | 27 |
| 2007 | 1462 | 24 |
| 2006 | 1304 | 22 |
| 2005 | 1143 | 23 |
| 2004 | 1053 | 19 |
| 2003 | 833 | 20 |
| 2002 | 799 | 17 |
| 2001 | 739 | 18 |
| 2000 | 820 | 17 |
| 1999 | 650 | 20 |
| 1998 | 583 | 21 |
| 1997 | 790 | 16 |
| 1996 | 784 | 16 |
| 1995 | 777 | 16 |
| 1994 | 596 | 17 |
| 1993 | 457 | 19 |
| 1992 | 399 | 21 |
| 1991 | 366 | 21 |
| 1990 | 293 | 22 |
| 1989 | 225 | 24 |
| 1988 | 166 | 30 |
| 1987 | 127 | 36 |
| 1986 | 108 | 33 |