| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1457 | 16 |
| 2015 | 1453 | 19 |
| 2014 | 1502 | 24 |
| 2013 | 1555 | 25 |
| 2012 | 1488 | 26 |
| 2011 | 1412 | 26 |
| 2010 | 1365 | 25 |
| 2009 | 1090 | 26 |
| 2008 | 1153 | 27 |
| 2007 | 1040 | 29 |
| 2006 | 871 | 28 |
| 2005 | 731 | 28 |
| 2004 | 657 | 28 |
| 2003 | 580 | 28 |
| 2002 | 498 | 28 |
| 2001 | 439 | 30 |
| 2000 | 466 | 29 |
| 1999 | 463 | 27 |
| 1998 | 412 | 27 |
| 1997 | 552 | 24 |
| 1996 | 683 | 21 |
| 1995 | 635 | 22 |
| 1994 | 546 | 20 |
| 1993 | 478 | 21 |
| 1992 | 424 | 22 |
| 1991 | 380 | 23 |
| 1990 | 318 | 26 |
| 1989 | 262 | 22 |
| 1988 | 213 | 25 |
| 1987 | 169 | 27 |
| 1986 | 143 | 24 |