| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 950 | 14 |
| 2015 | 941 | 14 |
| 2014 | 995 | 15 |
| 2013 | 923 | 15 |
| 2012 | 860 | 15 |
| 2011 | 828 | 15 |
| 2010 | 692 | 17 |
| 2009 | 653 | 15 |
| 2008 | 637 | 17 |
| 2007 | 564 | 18 |
| 2006 | 487 | 17 |
| 2005 | 466 | 17 |
| 2004 | 434 | 15 |
| 2003 | 354 | 15 |
| 2002 | 306 | 15 |
| 2001 | 298 | 14 |
| 2000 | 305 | 13 |
| 1999 | 148 | 19 |
| 1998 | 150 | 20 |
| 1997 | 140 | 23 |
| 1996 | 156 | 18 |
| 1995 | 149 | 16 |
| 1994 | 126 | 16 |
| 1993 | 114 | 17 |
| 1992 | 118 | 14 |
| 1991 | 110 | 14 |
| 1990 | 111 | 13 |
| 1989 | 91 | 13 |
| 1988 | 92 | 11 |
| 1987 | 82 | 12 |
| 1986 | 65 | 11 |