| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2201.2 | 39 |
| 2015 | 2199 | 42 |
| 2014 | 2324.5 | 43 |
| 2013 | 2348.6 | 44 |
| 2012 | 2214.6 | 44 |
| 2011 | 2012.3 | 46 |
| 2010 | 1748.3 | 48 |
| 2009 | 1473.8 | 48 |
| 2008 | 1522.7 | 50 |
| 2007 | 1245.8 | 51 |
| 2006 | 1037.2 | 51 |
| 2005 | 894.4 | 50 |
| 2004 | 840.9 | 47 |
| 2003 | 703.2 | 47 |
| 2002 | 757.1 | 44 |
| 2001 | 748.1 | 43 |
| 2000 | 840.5 | 40 |
| 1999 | 717.6 | 42 |
| 1998 | 674.5 | 42 |
| 1997 | 857.2 | 40 |
| 1996 | 807.8 | 39 |
| 1995 | 732.1 | 39 |
| 1994 | 618.6 | 38 |
| 1993 | 546.5 | 41 |
| 1992 | 458.3 | 43 |
| 1991 | 394.7 | 44 |
| 1990 | 325.2 | 50 |
| 1989 | 270.7 | 51 |
| 1988 | 229.1 | 50 |
| 1987 | 202.8 | 54 |
| 1986 | 180.8 | 53 |