| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 49 | 105 |
| 2015 | 46 | 127 |
| 2014 | 50 | 129 |
| 2013 | 46 | 131 |
| 2012 | 40 | 134 |
| 2011 | 38 | 135 |
| 2010 | 34 | 132 |
| 2009 | 34 | 130 |
| 2008 | 34 | 131 |
| 2007 | 30 | 130 |
| 2006 | 25 | 129 |
| 2005 | 21 | 132 |
| 2004 | 20 | 131 |
| 2003 | 16 | 129 |
| 2002 | 13 | 130 |
| 2001 | 11 | 127 |
| 2000 | 11 | 127 |
| 1999 | 12 | 126 |
| 1998 | 11 | 127 |
| 1997 | 9 | 131 |
| 1996 | 10 | 128 |
| 1995 | 9 | 126 |
| 1994 | 7 | 111 |
| 1993 | 11 | 102 |
| 1992 | 10 | 99 |
| 1991 | 15 | 88 |
| 1990 | 15 | 84 |
| 1989 | 12 | 75 |
| 1988 | 12 | 76 |
| 1987 | 11 | 75 |
| 1986 | 9 | 74 |