| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 49393.84 | 3 |
| 2015 | 43830.76 | 3 |
| 2014 | 48487.33 | 3 |
| 2013 | 51557.17 | 3 |
| 2012 | 62032.13 | 3 |
| 2011 | 61574.6 | 3 |
| 2010 | 57000.98 | 3 |
| 2009 | 52313.83 | 2 |
| 2008 | 50379.08 | 2 |
| 2007 | 45152.65 | 2 |
| 2006 | 45303.77 | 2 |
| 2005 | 47554.11 | 2 |
| 2004 | 48151.49 | 2 |
| 2003 | 44456.58 | 2 |
| 2002 | 41151.16 | 2 |
| 2001 | 43035.44 | 2 |
| 2000 | 48875.2 | 2 |
| 1999 | 45620.79 | 2 |
| 1998 | 40325.1 | 2 |
| 1997 | 44147.33 | 2 |
| 1996 | 48337.13 | 2 |
| 1995 | 54491.16 | 2 |
| 1994 | 49070.39 | 2 |
| 1993 | 44665.65 | 2 |
| 1992 | 38978.26 | 2 |
| 1991 | 35781.39 | 2 |
| 1990 | 31399.74 | 2 |
| 1989 | 30523.16 | 2 |
| 1988 | 30506.38 | 2 |
| 1987 | 25142.84 | 2 |
| 1986 | 20750.34 | 2 |