| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 9250.3 | 14 |
| 2015 | 8575.6 | 17 |
| 2014 | 8974.8 | 17 |
| 2013 | 9197.4 | 17 |
| 2012 | 9214.9 | 16 |
| 2011 | 8708.7 | 17 |
| 2010 | 7407.7 | 18 |
| 2009 | 5244.4 | 18 |
| 2008 | 5048.4 | 20 |
| 2007 | 4147.5 | 22 |
| 2006 | 3448.4 | 22 |
| 2005 | 2740.1 | 23 |
| 2004 | 2448.4 | 24 |
| 2003 | 2175.4 | 24 |
| 2002 | 1833.4 | 23 |
| 2001 | 1471.8 | 28 |
| 2000 | 1476.6 | 27 |
| 1999 | 1286.8 | 31 |
| 1998 | 861.4 | 38 |
| 1997 | 2163.4 | 21 |
| 1996 | 2287.7 | 22 |
| 1995 | 2048.3 | 22 |
| 1994 | 1748.7 | 22 |
| 1993 | 1532.9 | 23 |
| 1992 | 1250.5 | 27 |
| 1991 | 1161.7 | 27 |
| 1990 | 1055.9 | 31 |
| 1989 | 922.5 | 28 |
| 1988 | 822.3 | 28 |
| 1987 | 747.6 | 28 |
| 1986 | 807.5 | 25 |