| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1990 | 27 |
| 2015 | 1984 | 32 |
| 2014 | 2320 | 28 |
| 2013 | 2238 | 31 |
| 2012 | 2103 | 31 |
| 2011 | 2227 | 30 |
| 2010 | 2105 | 29 |
| 2009 | 2102 | 24 |
| 2008 | 2203 | 25 |
| 2007 | 1964 | 25 |
| 2006 | 1724 | 24 |
| 2005 | 1629 | 23 |
| 2004 | 1558 | 22 |
| 2003 | 1357 | 22 |
| 2002 | 1098 | 23 |
| 2001 | 1003 | 24 |
| 2000 | 991 | 23 |
| 1999 | 1081 | 21 |
| 1998 | 1075 | 22 |
| 1997 | 1055 | 21 |
| 1996 | 1144 | 20 |
| 1995 | 1140 | 20 |
| 1994 | 976 | 18 |
| 1993 | 903 | 19 |
| 1992 | 946 | 18 |
| 1991 | 857 | 18 |
| 1990 | 842 | 16 |
| 1989 | 675 | 12 |
| 1988 | 692 | 13 |
| 1987 | 647 | 12 |
| 1986 | 514 | 13 |