| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
48 |
111 |
| 2015 |
48 |
130 |
| 2014 |
63 |
128 |
| 2013 |
64 |
131 |
| 2012 |
61 |
132 |
| 2011 |
60 |
129 |
| 2010 |
46 |
130 |
| 2009 |
40 |
129 |
| 2008 |
57 |
118 |
| 2007 |
43 |
126 |
| 2006 |
31 |
128 |
| 2005 |
27 |
126 |
| 2004 |
21 |
132 |
| 2003 |
17 |
133 |
| 2002 |
13 |
135 |
| 2001 |
11 |
135 |
| 2000 |
10 |
134 |
| 1999 |
8 |
140 |
| 1998 |
12 |
129 |
| 1997 |
14 |
123 |
| 1996 |
13 |
127 |
| 1995 |
10 |
129 |