| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 32026.6 | 2 |
| 2015 | 31090.3 | 4 |
| 2014 | 36262.3 | 4 |
| 2013 | 35289.3 | 4 |
| 2012 | 33281.4 | 4 |
| 2011 | 35740 | 4 |
| 2010 | 32394.9 | 4 |
| 2009 | 32491.8 | 4 |
| 2008 | 35281.7 | 4 |
| 2007 | 32112.2 | 4 |
| 2006 | 28433.6 | 3 |
| 2005 | 27166.3 | 3 |
| 2004 | 26771.3 | 3 |
| 2003 | 24139.3 | 3 |
| 2002 | 19881.7 | 3 |
| 2001 | 19162.5 | 3 |
| 2000 | 19447.1 | 3 |
| 1999 | 21842.7 | 3 |
| 1998 | 22135.3 | 3 |
| 1997 | 21924.4 | 3 |
| 1996 | 24831.2 | 3 |
| 1995 | 25794.9 | 3 |
| 1994 | 22016.2 | 3 |
| 1993 | 20672.2 | 3 |
| 1992 | 21342.3 | 3 |
| 1991 | 18714.6 | 3 |
| 1990 | 17688 | 3 |
| 1989 | 14026.4 | 3 |
| 1988 | 14011 | 3 |
| 1987 | 12977.5 | 3 |
| 1986 | 10464.1 | 3 |