| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 675 | 6 |
| 2015 | 647 | 7 |
| 2014 | 580 | 9 |
| 2013 | 551 | 10 |
| 2012 | 532 | 10 |
| 2011 | 537 | 10 |
| 2010 | 413 | 11 |
| 2009 | 382 | 11 |
| 2008 | 383 | 12 |
| 2007 | 332 | 14 |
| 2006 | 297 | 14 |
| 2005 | 221 | 15 |
| 2004 | 202 | 16 |
| 2003 | 181 | 16 |
| 2002 | 157 | 16 |
| 2001 | 162 | 15 |
| 2000 | 179 | 14 |
| 1999 | 159 | 14 |
| 1998 | 157 | 14 |
| 1997 | 153 | 18 |
| 1996 | 147 | 18 |
| 1995 | 142 | 17 |
| 1994 | 119 | 18 |
| 1993 | 115 | 17 |
| 1992 | 114 | 19 |
| 1991 | 104 | 19 |
| 1990 | 92 | 22 |
| 1989 | 96 | 17 |
| 1988 | 89 | 18 |
| 1987 | 79 | 21 |
| 1986 | 80 | 12 |