| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 525 | 30 |
| 2015 | 536.2 | 33 |
| 2014 | 536 | 33 |
| 2013 | 543.5 | 33 |
| 2012 | 581 | 31 |
| 2011 | 618 | 29 |
| 2010 | 664.7 | 27 |
| 2009 | 693.6 | 26 |
| 2008 | 679.9 | 26 |
| 2007 | 696.1 | 25 |
| 2006 | 660.5 | 25 |
| 2005 | 618.4 | 25 |
| 2004 | 594.1 | 26 |
| 2003 | 570.8 | 26 |
| 2002 | 554.2 | 26 |
| 2001 | 539.5 | 26 |
| 2000 | 515 | 26 |
| 1999 | 496.9 | 26 |
| 1998 | 479.8 | 26 |
| 1997 | 467.7 | 27 |
| 1996 | 483 | 25 |
| 1995 | 458.8 | 26 |
| 1994 | 434.5 | 28 |
| 1993 | 439.3 | 28 |
| 1992 | 428.2 | 27 |
| 1991 | 441.4 | 27 |
| 1990 | 448.1 | 26 |
| 1989 | 445.5 | 22 |
| 1988 | 422.6 | 24 |
| 1987 | 447.2 | 20 |
| 1986 | 446.2 | 19 |