| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 877 | 36 |
| 2015 | 830 | 40 |
| 2014 | 938 | 39 |
| 2013 | 913 | 42 |
| 2012 | 925 | 40 |
| 2011 | 929 | 41 |
| 2010 | 769 | 41 |
| 2009 | 633 | 43 |
| 2008 | 842 | 42 |
| 2007 | 737 | 41 |
| 2006 | 624 | 39 |
| 2005 | 581 | 39 |
| 2004 | 528 | 39 |
| 2003 | 448 | 40 |
| 2002 | 432 | 36 |
| 2001 | 439 | 34 |
| 2000 | 471 | 31 |
| 1999 | 411 | 31 |
| 1998 | 361 | 37 |
| 1997 | 373 | 36 |
| 1996 | 376 | 34 |
| 1995 | 354 | 33 |
| 1994 | 358 | 27 |
| 1993 | 320 | 29 |
| 1992 | 292 | 29 |
| 1991 | 268 | 30 |
| 1990 | 238 | 35 |
| 1989 | 204 | 35 |
| 1988 | 211 | 27 |
| 1987 | 203 | 24 |
| 1986 | 156 | 29 |