| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 2637 | 17 |
| 2015 | 2814 | 20 |
| 2014 | 4261 | 16 |
| 2013 | 4687 | 14 |
| 2012 | 4470 | 14 |
| 2011 | 4088 | 16 |
| 2010 | 3224 | 17 |
| 2009 | 2506 | 18 |
| 2008 | 3666 | 15 |
| 2007 | 2800 | 17 |
| 2006 | 2079 | 17 |
| 2005 | 1643 | 18 |
| 2004 | 1310 | 20 |
| 2003 | 1028 | 20 |
| 2002 | 844 | 21 |
| 2001 | 743 | 23 |
| 2000 | 624 | 26 |
| 1999 | 513 | 26 |
| 1998 | 665 | 22 |
| 1997 | 912 | 18 |
| 1996 | 856 | 19 |
| 1995 | 1024 | 16 |
| 1994 | 916 | 16 |
| 1993 | 1327 | 10 |
| 1992 | 2221 | 7 |
| 1991 | 673 | 16 |
| 1990 | 927 | 12 |
| 1989 | 1064 | 9 |