| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1281 | 31 |
| 2015 | 1239 | 32 |
| 2014 | 1219 | 34 |
| 2013 | 1166 | 34 |
| 2012 | 1168 | 34 |
| 2011 | 1257 | 33 |
| 2010 | 1165 | 31 |
| 2009 | 1159 | 30 |
| 2008 | 1257 | 32 |
| 2007 | 1215 | 30 |
| 2006 | 1087 | 29 |
| 2005 | 1097 | 25 |
| 2004 | 1048 | 22 |
| 2003 | 928 | 22 |
| 2002 | 883 | 19 |
| 2001 | 828 | 18 |
| 2000 | 774 | 21 |
| 1999 | 712 | 20 |
| 1998 | 643 | 20 |
| 1997 | 533 | 25 |
| 1996 | 483 | 27 |
| 1995 | 447 | 27 |
| 1994 | 340 | 28 |
| 1993 | 290 | 27 |
| 1992 | 283 | 27 |
| 1991 | 242 | 28 |
| 1990 | 237 | 27 |
| 1989 | 207 | 28 |
| 1988 | 187 | 28 |
| 1987 | 160 | 28 |
| 1986 | 127 | 29 |