| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
17 |
91 |
| 2015 |
17 |
103 |
| 2014 |
20 |
102 |
| 2013 |
21 |
101 |
| 2012 |
21 |
98 |
| 2011 |
25 |
90 |
| 2010 |
25 |
84 |
| 2009 |
27 |
78 |
| 2008 |
30 |
81 |
| 2007 |
25 |
82 |
| 2006 |
22 |
76 |
| 2005 |
19 |
82 |
| 2004 |
19 |
76 |
| 2003 |
15 |
79 |
| 2002 |
14 |
79 |
| 2001 |
12 |
81 |
| 2000 |
12 |
83 |
| 1999 |
14 |
78 |
| 1998 |
15 |
77 |
| 1997 |
13 |
83 |
| 1996 |
14 |
78 |
| 1995 |
13 |
80 |