| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
43 |
60 |
| 2015 |
42 |
66 |
| 2014 |
51 |
66 |
| 2013 |
50 |
67 |
| 2012 |
49 |
67 |
| 2011 |
49 |
67 |
| 2010 |
32 |
77 |
| 2009 |
34 |
72 |
| 2008 |
46 |
64 |
| 2007 |
37 |
68 |
| 2006 |
32 |
65 |
| 2005 |
30 |
65 |
| 2004 |
27 |
66 |
| 2003 |
24 |
68 |
| 2002 |
21 |
67 |
| 2001 |
20 |
67 |
| 2000 |
19 |
67 |
| 1999 |
20 |
67 |
| 1998 |
23 |
66 |
| 1997 |
20 |
69 |
| 1996 |
24 |
65 |
| 1995 |
24 |
64 |
| 1994 |
20 |
58 |
| 1993 |
17 |
59 |