| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3032 | 14 |
| 2015 | 2898 | 16 |
| 2014 | 3112 | 20 |
| 2013 | 3579 | 18 |
| 2012 | 3125 | 18 |
| 2011 | 2348 | 22 |
| 2010 | 1956 | 23 |
| 2009 | 1725 | 19 |
| 2008 | 2008 | 19 |
| 2007 | 1721 | 20 |
| 2006 | 1479 | 19 |
| 2005 | 1309 | 20 |
| 2004 | 1228 | 20 |
| 2003 | 1048 | 17 |
| 2002 | 917 | 18 |
| 2001 | 821 | 19 |
| 2000 | 805 | 19 |
| 1999 | 803 | 18 |
| 1998 | 789 | 17 |
| 1997 | 762 | 19 |
| 1996 | 797 | 18 |
| 1995 | 816 | 15 |
| 1994 | 704 | 15 |
| 1993 | 632 | 15 |
| 1992 | 657 | 13 |
| 1991 | 615 | 13 |
| 1990 | 638 | 12 |
| 1989 | 515 | 14 |
| 1988 | 507 | 12 |
| 1987 | 455 | 12 |
| 1986 | 375 | 10 |