| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1871 | 25 |
| 2015 | 1849 | 29 |
| 2014 | 2179 | 29 |
| 2013 | 2167 | 29 |
| 2012 | 2086 | 29 |
| 2011 | 2195 | 26 |
| 2010 | 1861 | 27 |
| 2009 | 1666 | 24 |
| 2008 | 2094 | 24 |
| 2007 | 1868 | 21 |
| 2006 | 1585 | 22 |
| 2005 | 1433 | 22 |
| 2004 | 1320 | 19 |
| 2003 | 1093 | 18 |
| 2002 | 887 | 20 |
| 2001 | 846 | 20 |
| 2000 | 826 | 20 |
| 1999 | 844 | 18 |
| 1998 | 841 | 18 |
| 1997 | 804 | 22 |
| 1996 | 849 | 20 |
| 1995 | 836 | 18 |
| 1994 | 688 | 19 |
| 1993 | 605 | 18 |
| 1992 | 672 | 18 |
| 1991 | 616 | 17 |
| 1990 | 595 | 17 |
| 1989 | 472 | 18 |
| 1988 | 446 | 16 |
| 1987 | 390 | 15 |
| 1986 | 317 | 17 |