| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 762 | 30 |
| 2015 | 828 | 36 |
| 2014 | 931 | 36 |
| 2013 | 978 | 39 |
| 2012 | 1057 | 36 |
| 2011 | 1122 | 33 |
| 2010 | 1028 | 30 |
| 2009 | 816 | 33 |
| 2008 | 811 | 38 |
| 2007 | 794 | 31 |
| 2006 | 713 | 31 |
| 2005 | 700 | 30 |
| 2004 | 624 | 29 |
| 2003 | 491 | 32 |
| 2002 | 343 | 35 |
| 2001 | 359 | 36 |
| 2000 | 396 | 33 |
| 1999 | 390 | 32 |
| 1998 | 406 | 29 |
| 1997 | 460 | 27 |
| 1996 | 455 | 27 |
| 1995 | 496 | 24 |
| 1994 | 448 | 21 |
| 1993 | 439 | 22 |
| 1992 | 453 | 21 |
| 1991 | 435 | 21 |
| 1990 | 421 | 20 |
| 1989 | 474 | 11 |
| 1988 | 447 | 11 |
| 1987 | 410 | 11 |
| 1986 | 330 | 12 |