| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1090 | 10 |
| 2015 | 1113 | 10 |
| 2014 | 1147 | 12 |
| 2013 | 1092 | 12 |
| 2012 | 1078 | 11 |
| 2011 | 1020 | 12 |
| 2010 | 965 | 12 |
| 2009 | 816 | 13 |
| 2008 | 969 | 10 |
| 2007 | 839 | 10 |
| 2006 | 696 | 11 |
| 2005 | 591 | 12 |
| 2004 | 501 | 13 |
| 2003 | 404 | 14 |
| 2002 | 366 | 13 |
| 2001 | 328 | 12 |
| 2000 | 332 | 11 |
| 1999 | 270 | 12 |
| 1998 | 243 | 12 |
| 1997 | 292 | 9 |
| 1996 | 294 | 9 |
| 1995 | 256 | 8 |
| 1994 | 184 | 8 |
| 1993 | 148 | 9 |
| 1992 | 134 | 12 |
| 1991 | 120 | 13 |
| 1990 | 101 | 14 |
| 1989 | 84 | 15 |
| 1988 | 60 | 15 |
| 1987 | 46 | 15 |
| 1986 | 39 | 17 |