| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
31 |
132 |
| 2015 |
34 |
133 |
| 2014 |
43 |
133 |
| 2013 |
42 |
135 |
| 2012 |
38 |
134 |
| 2011 |
32 |
140 |
| 2010 |
27 |
138 |
| 2009 |
26 |
135 |
| 2008 |
33 |
135 |
| 2007 |
25 |
138 |
| 2006 |
17 |
142 |
| 2005 |
13 |
143 |
| 2004 |
12 |
144 |
| 2003 |
9 |
145 |
| 2002 |
7 |
145 |
| 2001 |
7 |
144 |
| 2000 |
7 |
143 |
| 1999 |
7 |
144 |
| 1998 |
7 |
142 |
| 1997 |
8 |
137 |
| 1996 |
7 |
141 |
| 1995 |
8 |
130 |
| 1994 |
5 |
141 |