| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 5945 | 5 |
| 2015 | 5987 | 7 |
| 2014 | 6205 | 9 |
| 2013 | 6093 | 9 |
| 2012 | 5639 | 12 |
| 2011 | 5194 | 12 |
| 2010 | 4560 | 11 |
| 2009 | 3644 | 11 |
| 2008 | 4018 | 14 |
| 2007 | 3719 | 12 |
| 2006 | 3368 | 12 |
| 2005 | 3000 | 12 |
| 2004 | 2690 | 11 |
| 2003 | 2286 | 11 |
| 2002 | 2061 | 10 |
| 2001 | 2000 | 10 |
| 2000 | 2088 | 10 |
| 1999 | 1783 | 10 |
| 1998 | 1863 | 9 |
| 1997 | 2100 | 9 |
| 1996 | 1967 | 9 |
| 1995 | 1890 | 9 |
| 1994 | 1604 | 9 |
| 1993 | 1367 | 9 |
| 1992 | 1225 | 12 |
| 1991 | 1001 | 12 |
| 1990 | 836 | 13 |
| 1989 | 735 | 13 |
| 1988 | 664 | 12 |
| 1987 | 518 | 13 |
| 1986 | 393 | 13 |