| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 856 | 34 |
| 2015 | 856 | 34 |
| 2014 | 996 | 34 |
| 2013 | 969 | 34 |
| 2012 | 919 | 34 |
| 2011 | 957 | 34 |
| 2010 | 831 | 34 |
| 2009 | 831 | 31 |
| 2008 | 1094 | 31 |
| 2007 | 980 | 29 |
| 2006 | 855 | 29 |
| 2005 | 756 | 30 |
| 2004 | 682 | 28 |
| 2003 | 574 | 26 |
| 2002 | 503 | 27 |
| 2001 | 453 | 27 |
| 2000 | 456 | 27 |
| 1999 | 458 | 26 |
| 1998 | 469 | 24 |
| 1997 | 449 | 26 |
| 1996 | 453 | 24 |
| 1995 | 459 | 24 |
| 1994 | 367 | 23 |
| 1993 | 313 | 22 |
| 1992 | 357 | 22 |
| 1991 | 342 | 22 |
| 1990 | 333 | 20 |
| 1989 | 280 | 20 |
| 1988 | 272 | 20 |
| 1987 | 255 | 19 |
| 1986 | 229 | 19 |