| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2015 | 4803.9 | 22 |
| 2014 | 5344.7 | 23 |
| 2013 | 4889.6 | 25 |
| 2012 | 3756.9 | 31 |
| 2011 | 3711.2 | 29 |
| 2010 | 3399.9 | 30 |
| 2009 | 1699.3 | 45 |
| 2008 | 1772.9 | 46 |
| 2007 | 1614.7 | 43 |
| 2006 | 1140 | 47 |
| 2005 | 981.4 | 48 |
| 2004 | 774.2 | 50 |
| 2003 | 647.1 | 49 |
| 2002 | 540.6 | 52 |
| 2001 | 401.3 | 55 |
| 2000 | 315.1 | 55 |
| 1999 | 316 | 56 |
| 1998 | 341.8 | 55 |
| 1997 | 334.3 | 55 |
| 1996 | 326.1 | 55 |
| 1995 | 251.9 | 57 |
| 1994 | 169.4 | 63 |
| 1993 | 142.8 | 66 |
| 1992 | 252 | 56 |
| 1991 | 223.2 | 57 |
| 1990 | 253.3 | 57 |
| 1989 | 175.5 | 55 |
| 1988 | 208.5 | 52 |
| 1987 | 211.4 | 52 |
| 1986 | 201.2 | 50 |