| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
68 |
46 |
| 2015 |
71 |
46 |
| 2014 |
78 |
48 |
| 2013 |
77 |
50 |
| 2012 |
80 |
50 |
| 2011 |
85 |
48 |
| 2010 |
86 |
46 |
| 2009 |
93 |
39 |
| 2008 |
100 |
40 |
| 2007 |
97 |
35 |
| 2006 |
87 |
35 |
| 2005 |
106 |
29 |
| 2004 |
103 |
27 |
| 2003 |
101 |
27 |
| 2002 |
77 |
30 |
| 2001 |
71 |
30 |
| 2000 |
71 |
30 |
| 1999 |
82 |
29 |
| 1998 |
86 |
29 |
| 1997 |
89 |
28 |
| 1996 |
96 |
27 |
| 1995 |
101 |
24 |