| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2850.9 | 33 |
| 2015 | 2790.1 | 38 |
| 2014 | 3277.8 | 34 |
| 2013 | 3208.8 | 34 |
| 2012 | 3074.5 | 34 |
| 2011 | 3220.1 | 33 |
| 2010 | 2996.3 | 33 |
| 2009 | 3067.9 | 30 |
| 2008 | 3409.1 | 29 |
| 2007 | 3101.7 | 28 |
| 2006 | 2713.1 | 27 |
| 2005 | 2499.1 | 27 |
| 2004 | 2371.7 | 25 |
| 2003 | 2032.8 | 25 |
| 2002 | 1664 | 26 |
| 2001 | 1530.2 | 26 |
| 2000 | 1531.4 | 26 |
| 1999 | 1672.9 | 23 |
| 1998 | 1715.5 | 24 |
| 1997 | 1659.8 | 25 |
| 1996 | 1770.1 | 25 |
| 1995 | 1762.9 | 25 |
| 1994 | 1469.1 | 24 |
| 1993 | 1324.2 | 25 |
| 1992 | 1423.5 | 23 |
| 1991 | 1305.7 | 23 |
| 1990 | 1305.7 | 26 |
| 1989 | 1081.4 | 25 |
| 1988 | 1115.4 | 22 |
| 1987 | 1071.7 | 22 |
| 1986 | 882.5 | 23 |