| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 5730 | 5 |
| 2015 | 5734 | 6 |
| 2014 | 6766 | 6 |
| 2013 | 6815 | 5 |
| 2012 | 6744 | 6 |
| 2011 | 7200 | 5 |
| 2010 | 6111 | 5 |
| 2009 | 5609 | 4 |
| 2008 | 7168 | 5 |
| 2007 | 6309 | 5 |
| 2006 | 5419 | 6 |
| 2005 | 5041 | 6 |
| 2004 | 4709 | 4 |
| 2003 | 3988 | 5 |
| 2002 | 3293 | 5 |
| 2001 | 3286 | 5 |
| 2000 | 3389 | 5 |
| 1999 | 3157 | 4 |
| 1998 | 3078 | 4 |
| 1997 | 2850 | 5 |
| 1996 | 2946 | 4 |
| 1995 | 2894 | 4 |
| 1994 | 2460 | 4 |
| 1993 | 2174 | 4 |
| 1992 | 2396 | 3 |
| 1991 | 2318 | 4 |
| 1990 | 2344 | 4 |
| 1989 | 1930 | 5 |
| 1988 | 1789 | 5 |
| 1987 | 1585 | 3 |
| 1986 | 1294 | 3 |