| 时间 |
值 （亿美元） |
世界排名 |
| 2016 |
243 |
62 |
| 2015 |
230 |
73 |
| 2014 |
254 |
74 |
| 2013 |
246 |
76 |
| 2012 |
232 |
76 |
| 2011 |
254 |
74 |
| 2010 |
228 |
73 |
| 2009 |
240 |
68 |
| 2008 |
328 |
67 |
| 2007 |
278 |
64 |
| 2006 |
234 |
63 |
| 2005 |
206 |
62 |
| 2004 |
189 |
60 |
| 2003 |
161 |
56 |
| 2002 |
122 |
58 |
| 2001 |
98 |
64 |
| 2000 |
86 |
66 |
| 1999 |
85 |
61 |
| 1998 |
92 |
62 |
| 1997 |
105 |
58 |
| 1996 |
88 |
60 |
| 1995 |
80 |
61 |