| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 557.6 | 6 |
| 2015 | 553.4 | 5 |
| 2014 | 636.1 | 5 |
| 2013 | 624.2 | 5 |
| 2012 | 600.4 | 4 |
| 2011 | 646 | 4 |
| 2010 | 617.8 | 3 |
| 2009 | 668.9 | 3 |
| 2008 | 660.1 | 3 |
| 2007 | 606 | 4 |
| 2006 | 545.2 | 4 |
| 2005 | 529.1 | 3 |
| 2004 | 530 | 3 |
| 2003 | 459.2 | 3 |
| 2002 | 364 | 4 |
| 2001 | 332.8 | 4 |
| 2000 | 338.1 | 4 |
| 1999 | 389 | 3 |
| 1998 | 400.4 | 2 |
| 1997 | 413.1 | 2 |
| 1996 | 464 | 2 |
| 1995 | 477.7 | 3 |
| 1994 | 443.9 | 3 |
| 1993 | 425.9 | 2 |
| 1992 | 451.3 | 2 |
| 1991 | 427 | 2 |
| 1990 | 425.9 | 2 |
| 1989 | 353.2 | 2 |
| 1988 | 361.1 | 2 |
| 1987 | 348.6 | 2 |
| 1986 | 284.5 | 2 |