| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1947 | 21 |
| 2015 | 2027 | 21 |
| 2014 | 2277 | 23 |
| 2013 | 2504 | 21 |
| 2012 | 2491 | 20 |
| 2011 | 2288 | 21 |
| 2010 | 1829 | 21 |
| 2009 | 1337 | 24 |
| 2008 | 1792 | 24 |
| 2007 | 1400 | 25 |
| 2006 | 1288 | 23 |
| 2005 | 1182 | 21 |
| 2004 | 944 | 24 |
| 2003 | 758 | 22 |
| 2002 | 646 | 21 |
| 2001 | 620 | 21 |
| 2000 | 619 | 21 |
| 1999 | 503 | 22 |
| 1998 | 430 | 28 |
| 1997 | 629 | 23 |
| 1996 | 723 | 18 |
| 1995 | 708 | 18 |
| 1994 | 545 | 20 |
| 1993 | 461 | 18 |
| 1992 | 407 | 20 |
| 1991 | 376 | 20 |
| 1990 | 330 | 21 |
| 1989 | 258 | 21 |
| 1988 | 203 | 25 |
| 1987 | 130 | 34 |
| 1986 | 92 | 41 |