| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 751 | 36 |
| 2015 | 814 | 36 |
| 2014 | 922 | 39 |
| 2013 | 962 | 39 |
| 2012 | 996 | 40 |
| 2011 | 1088 | 38 |
| 2010 | 913 | 36 |
| 2009 | 617 | 37 |
| 2008 | 808 | 40 |
| 2007 | 698 | 38 |
| 2006 | 582 | 40 |
| 2005 | 516 | 38 |
| 2004 | 461 | 36 |
| 2003 | 365 | 36 |
| 2002 | 297 | 37 |
| 2001 | 293 | 37 |
| 2000 | 300 | 36 |
| 1999 | 267 | 34 |
| 1998 | 264 | 36 |
| 1997 | 310 | 32 |
| 1996 | 292 | 32 |
| 1995 | 279 | 32 |
| 1994 | 253 | 31 |
| 1993 | 242 | 29 |
| 1992 | 234 | 30 |
| 1991 | 233 | 29 |
| 1990 | 235 | 28 |
| 1989 | 222 | 26 |
| 1988 | 219 | 24 |
| 1987 | 212 | 24 |
| 1986 | 184 | 23 |