| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1914 | 22 |
| 2015 | 1930 | 23 |
| 2014 | 3079 | 17 |
| 2013 | 3413 | 16 |
| 2012 | 3354 | 17 |
| 2011 | 3238 | 17 |
| 2010 | 2486 | 17 |
| 2009 | 1918 | 17 |
| 2008 | 2919 | 17 |
| 2007 | 2235 | 17 |
| 2006 | 1643 | 17 |
| 2005 | 1254 | 19 |
| 2004 | 974 | 23 |
| 2003 | 761 | 21 |
| 2002 | 610 | 22 |
| 2001 | 538 | 23 |
| 2000 | 447 | 28 |
| 1999 | 395 | 29 |
| 1998 | 580 | 22 |
| 1997 | 736 | 18 |
| 1996 | 688 | 19 |
| 1995 | 609 | 22 |
| 1994 | 505 | 22 |