| 时间 |
值 （亿美元） |
世界排名 |
| 2012 |
102.1 |
49 |
| 2011 |
154.7 |
48 |
| 2010 |
140.8 |
49 |
| 2009 |
206.1 |
45 |
| 2008 |
430.3 |
41 |
| 2007 |
419.3 |
44 |
| 2006 |
328.8 |
41 |
| 2005 |
410.4 |
39 |
| 2004 |
176.6 |
38 |
| 2003 |
88 |
39 |
| 2002 |
60.8 |
38 |
| 2001 |
33.5 |
45 |
| 2000 |
65.8 |
43 |
| 1999 |
41.2 |
45 |
| 1998 |
48.1 |
44 |
| 1997 |
70.7 |
44 |
| 1996 |
84.3 |
35 |
| 1995 |
36.3 |
41 |
| 1994 |
13.3 |
44 |