| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 524 | 20 |
| 2015 | 483 | 24 |
| 2014 | 531 | 24 |
| 2013 | 522 | 24 |
| 2012 | 527 | 23 |
| 2011 | 513 | 23 |
| 2010 | 457 | 23 |
| 2009 | 397 | 23 |
| 2008 | 431 | 24 |
| 2007 | 398 | 24 |
| 2006 | 326 | 24 |
| 2005 | 300 | 23 |
| 2004 | 273 | 21 |
| 2003 | 231 | 21 |
| 2002 | 191 | 22 |
| 2001 | 175 | 20 |
| 2000 | 195 | 18 |
| 1999 | 184 | 17 |
| 1998 | 169 | 16 |
| 1997 | 190 | 16 |
| 1996 | 189 | 14 |
| 1995 | 165 | 13 |
| 1994 | 142 | 14 |
| 1993 | 122 | 14 |
| 1992 | 113 | 16 |
| 1991 | 108 | 16 |
| 1990 | 100 | 16 |
| 1989 | 87 | 16 |