| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 81 | 91 |
| 2015 | 75 | 111 |
| 2014 | 82 | 112 |
| 2013 | 73 | 116 |
| 2012 | 65 | 117 |
| 2011 | 65 | 114 |
| 2010 | 60 | 115 |
| 2009 | 58 | 111 |
| 2008 | 60 | 111 |
| 2007 | 53 | 111 |
| 2006 | 44 | 112 |
| 2005 | 41 | 105 |
| 2004 | 39 | 105 |
| 2003 | 34 | 105 |
| 2002 | 29 | 103 |
| 2001 | 27 | 101 |
| 2000 | 26 | 104 |
| 1999 | 26 | 99 |
| 1998 | 25 | 99 |
| 1997 | 23 | 103 |
| 1996 | 22 | 100 |
| 1995 | 21 | 100 |
| 1994 | 13 | 102 |
| 1993 | 12 | 99 |
| 1992 | 12 | 95 |
| 1991 | 10 | 103 |
| 1990 | 9 | 103 |
| 1989 | 8 | 88 |
| 1988 | 7 | 87 |
| 1987 | 6 | 88 |
| 1986 | 5 | 89 |