| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1853 | 23 |
| 2015 | 1911 | 24 |
| 2014 | 2251 | 24 |
| 2013 | 2420 | 22 |
| 2012 | 2426 | 22 |
| 2011 | 2560 | 21 |
| 2010 | 2019 | 21 |
| 2009 | 1530 | 23 |
| 2008 | 1979 | 21 |
| 2007 | 1606 | 23 |
| 2006 | 1378 | 22 |
| 2005 | 1185 | 22 |
| 2004 | 967 | 23 |
| 2003 | 731 | 24 |
| 2002 | 604 | 25 |
| 2001 | 582 | 26 |
| 2000 | 551 | 27 |
| 1999 | 480 | 27 |
| 1998 | 511 | 24 |
| 1997 | 530 | 26 |
| 1996 | 477 | 28 |
| 1995 | 465 | 25 |
| 1994 | 435 | 23 |
| 1993 | 386 | 22 |
| 1992 | 358 | 23 |
| 1991 | 316 | 24 |
| 1990 | 314 | 23 |
| 1989 | 344 | 19 |
| 1988 | 335 | 17 |
| 1987 | 262 | 20 |
| 1986 | 223 | 19 |