| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 34667.57 | 4 |
| 2015 | 33636 | 4 |
| 2014 | 38792.77 | 4 |
| 2013 | 37525.14 | 4 |
| 2012 | 35439.84 | 4 |
| 2011 | 37576.98 | 4 |
| 2010 | 34170.95 | 4 |
| 2009 | 34180.05 | 4 |
| 2008 | 37523.66 | 4 |
| 2007 | 34399.53 | 4 |
| 2006 | 30024.46 | 3 |
| 2005 | 28614.1 | 3 |
| 2004 | 28192.45 | 3 |
| 2003 | 25057.34 | 3 |
| 2002 | 20791.36 | 3 |
| 2001 | 19506.49 | 3 |
| 2000 | 19499.54 | 3 |
| 1999 | 21999.57 | 3 |
| 1998 | 22432.26 | 3 |
| 1997 | 22186.89 | 3 |
| 1996 | 25036.65 | 3 |
| 1995 | 25916.2 | 3 |
| 1994 | 22059.66 | 3 |
| 1993 | 20685.56 | 3 |
| 1992 | 21231.31 | 3 |
| 1991 | 18618.74 | 3 |
| 1990 | 17649.68 | 3 |
| 1989 | 13936.74 | 3 |
| 1988 | 13959.32 | 3 |
| 1987 | 12932.64 | 3 |
| 1986 | 10423.01 | 3 |