| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 3591 | 13 |
| 2015 | 3929 | 13 |
| 2014 | 4629 | 12 |
| 2013 | 4654 | 12 |
| 2012 | 4897 | 10 |
| 2011 | 4645 | 12 |
| 2010 | 3502 | 13 |
| 2009 | 2572 | 14 |
| 2008 | 3210 | 14 |
| 2007 | 2294 | 16 |
| 2006 | 1784 | 16 |
| 2005 | 1429 | 16 |
| 2004 | 998 | 21 |
| 2003 | 726 | 23 |
| 2002 | 565 | 23 |
| 2001 | 504 | 25 |
| 2000 | 515 | 24 |
| 1999 | 470 | 23 |
| 1998 | 430 | 27 |
| 1997 | 414 | 28 |
| 1996 | 379 | 27 |
| 1995 | 347 | 27 |
| 1994 | 268 | 28 |
| 1993 | 228 | 29 |
| 1992 | 236 | 28 |
| 1991 | 204 | 33 |
| 1990 | 236 | 27 |
| 1989 | 205 | 26 |
| 1988 | 191 | 26 |
| 1987 | 167 | 24 |
| 1986 | 154 | 24 |