| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 543 | 41 |
| 2015 | 525 | 48 |
| 2014 | 629 | 46 |
| 2013 | 618 | 49 |
| 2012 | 559 | 50 |
| 2011 | 675 | 48 |
| 2010 | 621 | 46 |
| 2009 | 568 | 45 |
| 2008 | 701 | 43 |
| 2007 | 556 | 44 |
| 2006 | 402 | 47 |
| 2005 | 318 | 48 |
| 2004 | 239 | 50 |
| 2003 | 185 | 50 |
| 2002 | 154 | 51 |
| 2001 | 131 | 51 |
| 2000 | 113 | 55 |
| 1999 | 109 | 51 |
| 1998 | 134 | 48 |
| 1997 | 128 | 51 |
| 1996 | 140 | 48 |
| 1995 | 136 | 47 |
| 1994 | 129 | 41 |
| 1993 | 103 | 41 |
| 1992 | 108 | 38 |
| 1991 | 122 | 36 |
| 1990 | 179 | 33 |