| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 26 | 117 |
| 2015 | 26 | 122 |
| 2014 | 28 | 126 |
| 2013 | 27 | 125 |
| 2012 | 25 | 128 |
| 2011 | 25 | 127 |
| 2010 | 22 | 125 |
| 2009 | 20 | 121 |
| 2008 | 22 | 125 |
| 2007 | 17 | 129 |
| 2006 | 16 | 126 |
| 2005 | 16 | 124 |
| 2004 | 15 | 121 |
| 2003 | 13 | 118 |
| 2002 | 11 | 117 |
| 2001 | 10 | 118 |
| 2000 | 9 | 116 |
| 1999 | 10 | 112 |
| 1998 | 10 | 113 |
| 1997 | 9 | 114 |
| 1996 | 10 | 112 |
| 1995 | 10 | 110 |
| 1994 | 8 | 113 |
| 1993 | 7 | 102 |
| 1992 | 7 | 101 |
| 1991 | 7 | 96 |
| 1990 | 8 | 98 |
| 1989 | 7 | 98 |
| 1988 | 6 | 99 |
| 1987 | 6 | 94 |
| 1986 | 6 | 93 |