| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 5496.4 | 18 |
| 2015 | 5896.2 | 21 |
| 2014 | 5241.7 | 25 |
| 2013 | 5525.7 | 22 |
| 2012 | 5353.4 | 22 |
| 2011 | 5211.9 | 24 |
| 2010 | 4113.6 | 25 |
| 2009 | 3161.1 | 29 |
| 2008 | 3481.1 | 28 |
| 2007 | 2749.4 | 30 |
| 2006 | 2194.9 | 31 |
| 2005 | 1869.6 | 34 |
| 2004 | 1531.3 | 35 |
| 2003 | 1132.8 | 36 |
| 2002 | 830.5 | 41 |
| 2001 | 2651.9 | 17 |
| 2000 | 2860.5 | 16 |
| 1999 | 2884.2 | 16 |
| 1998 | 3064.8 | 16 |
| 1997 | 2993.4 | 17 |
| 1996 | 2739.2 | 18 |
| 1995 | 2590.9 | 19 |
| 1994 | 2653.5 | 18 |
| 1993 | 2424.3 | 18 |
| 1992 | 2323 | 19 |
| 1991 | 1866.9 | 20 |
| 1990 | 1332.6 | 25 |
| 1989 | 716.7 | 32 |
| 1988 | 1220.2 | 21 |
| 1987 | 1107.8 | 21 |
| 1986 | 1089 | 20 |