| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 25078.6 | 4 |
| 2015 | 24668.8 | 6 |
| 2014 | 29057.2 | 6 |
| 2013 | 28613.9 | 5 |
| 2012 | 27392.5 | 5 |
| 2011 | 29360.2 | 5 |
| 2010 | 26966.5 | 5 |
| 2009 | 27322 | 5 |
| 2008 | 29746.7 | 5 |
| 2007 | 26974.9 | 6 |
| 2006 | 23444.4 | 6 |
| 2005 | 22128.1 | 5 |
| 2004 | 21109.2 | 5 |
| 2003 | 18279.8 | 5 |
| 2002 | 14753.7 | 5 |
| 2001 | 13646.4 | 5 |
| 2000 | 13535.6 | 5 |
| 1999 | 14671.7 | 5 |
| 1998 | 14716.9 | 5 |
| 1997 | 14182.9 | 5 |
| 1996 | 15866.7 | 4 |
| 1995 | 15851 | 4 |
| 1994 | 13813.3 | 4 |
| 1993 | 13081.6 | 4 |
| 1992 | 13996.9 | 4 |
| 1991 | 12797.7 | 4 |
| 1990 | 12855.2 | 4 |
| 1989 | 10374.3 | 4 |
| 1988 | 10305 | 4 |
| 1987 | 9487.9 | 4 |
| 1986 | 7756.5 | 4 |