| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2015 | 818 | 16 |
| 2014 | 802 | 17 |
| 2013 | 777 | 17 |
| 2012 | 792 | 16 |
| 2011 | 769 | 16 |
| 2010 | 782 | 14 |
| 2009 | 523 | 19 |
| 2008 | 551 | 20 |
| 2007 | 698 | 15 |
| 2006 | 580 | 15 |
| 2005 | 467 | 16 |
| 2004 | 351 | 17 |
| 2003 | 247 | 19 |
| 2002 | 208 | 19 |
| 2001 | 198 | 18 |
| 2000 | 189 | 18 |
| 1999 | 170 | 17 |
| 1998 | 142 | 21 |
| 1997 | 123 | 25 |
| 1996 | 110 | 24 |
| 1995 | 101 | 22 |
| 1994 | 80 | 24 |
| 1993 | 64 | 24 |
| 1992 | 66 | 23 |
| 1991 | 58 | 23 |
| 1990 | 59 | 21 |
| 1989 | 57 | 19 |
| 1988 | 52 | 18 |
| 1987 | 45 | 17 |
| 1986 | 38 | 18 |