| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2015 | 43972.3 | 3 |
| 2014 | 49683 | 3 |
| 2013 | 52751.6 | 3 |
| 2012 | 62991.5 | 3 |
| 2011 | 61909 | 3 |
| 2010 | 56168.5 | 3 |
| 2009 | 52025.6 | 2 |
| 2008 | 50152.9 | 2 |
| 2007 | 44298 | 2 |
| 2006 | 44663.2 | 2 |
| 2005 | 46836.3 | 2 |
| 2004 | 47178 | 2 |
| 2003 | 43702.8 | 2 |
| 2002 | 40595.3 | 2 |
| 2001 | 42751.4 | 2 |
| 2000 | 48176.6 | 2 |
| 1999 | 44911.6 | 2 |
| 1998 | 39592.4 | 2 |
| 1997 | 43680.7 | 2 |
| 1996 | 48127.5 | 2 |
| 1995 | 53802.3 | 2 |
| 1994 | 48136.7 | 2 |
| 1993 | 43725 | 2 |
| 1992 | 38186.4 | 2 |
| 1991 | 35255.3 | 2 |
| 1990 | 31150.8 | 2 |
| 1989 | 30102.9 | 2 |
| 1988 | 29886.2 | 2 |
| 1987 | 24425.7 | 2 |
| 1986 | 19969.4 | 2 |