| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 497 | 21 |
| 2015 | 509 | 23 |
| 2014 | 648 | 22 |
| 2013 | 691 | 21 |
| 2012 | 615 | 21 |
| 2011 | 573 | 22 |
| 2010 | 486 | 22 |
| 2009 | 454 | 22 |
| 2008 | 565 | 22 |
| 2007 | 436 | 22 |
| 2006 | 355 | 23 |
| 2005 | 286 | 25 |
| 2004 | 228 | 23 |
| 2003 | 183 | 23 |
| 2002 | 150 | 24 |
| 2001 | 125 | 25 |
| 2000 | 113 | 27 |
| 1999 | 111 | 27 |
| 1998 | 125 | 21 |
| 1997 | 141 | 22 |
| 1996 | 133 | 21 |
| 1995 | 106 | 22 |
| 1994 | 84 | 22 |