| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 17896.7 | 6 |
| 2015 | 18248.9 | 8 |
| 2014 | 25213.6 | 7 |
| 2013 | 25297.2 | 7 |
| 2012 | 24987 | 7 |
| 2011 | 26363.3 | 7 |
| 2010 | 22318.7 | 7 |
| 2009 | 16737.4 | 8 |
| 2008 | 16990.4 | 9 |
| 2007 | 13780.5 | 10 |
| 2006 | 10776.6 | 10 |
| 2005 | 8613.1 | 12 |
| 2004 | 6464.7 | 13 |
| 2003 | 5459.2 | 13 |
| 2002 | 5036.8 | 13 |
| 2001 | 5716.4 | 11 |
| 2000 | 6702.6 | 10 |
| 1999 | 6104.9 | 10 |
| 1998 | 8842.6 | 8 |
| 1997 | 9062.4 | 8 |
| 1996 | 8689.2 | 7 |
| 1995 | 8004.7 | 7 |
| 1994 | 5581.3 | 8 |
| 1993 | 4316.4 | 11 |
| 1992 | 3906.5 | 11 |
| 1991 | 5982.6 | 8 |
| 1990 | 4562.3 | 10 |
| 1989 | 4108.3 | 10 |
| 1988 | 3132.3 | 10 |
| 1987 | 2844.8 | 9 |
| 1986 | 2615.4 | 9 |