| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 80 | 87 |
| 2015 | 108 | 81 |
| 2014 | 146 | 77 |
| 2013 | 187 | 72 |
| 2012 | 130 | 81 |
| 2011 | 149 | 75 |
| 2010 | 110 | 81 |
| 2009 | 91 | 79 |
| 2008 | 187 | 72 |
| 2007 | 134 | 73 |
| 2006 | 142 | 67 |
| 2005 | 99 | 72 |
| 2004 | 65 | 76 |
| 2003 | 52 | 79 |
| 2002 | 39 | 81 |
| 2001 | 43 | 78 |
| 2000 | 43 | 77 |
| 1999 | 28 | 81 |
| 1998 | 23 | 84 |
| 1997 | 25 | 83 |
| 1996 | 25 | 81 |
| 1995 | 25 | 80 |
| 1994 | 19 | 85 |
| 1993 | 17 | 78 |
| 1992 | 17 | 79 |
| 1991 | 20 | 68 |
| 1990 | 20 | 71 |
| 1989 | 16 | 75 |
| 1988 | 14 | 73 |
| 1987 | 15 | 68 |
| 1986 | 14 | 66 |