| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 75 | 95 |
| 2015 | 70 | 113 |
| 2014 | 81 | 113 |
| 2013 | 79 | 113 |
| 2012 | 75 | 112 |
| 2011 | 76 | 111 |
| 2010 | 67 | 111 |
| 2009 | 67 | 105 |
| 2008 | 72 | 106 |
| 2007 | 60 | 106 |
| 2006 | 49 | 104 |
| 2005 | 45 | 101 |
| 2004 | 42 | 100 |
| 2003 | 35 | 104 |
| 2002 | 28 | 104 |
| 2001 | 25 | 108 |
| 2000 | 24 | 108 |
| 1999 | 26 | 98 |
| 1998 | 26 | 98 |
| 1997 | 24 | 99 |
| 1996 | 25 | 93 |
| 1995 | 24 | 93 |
| 1994 | 20 | 81 |
| 1993 | 29 | 73 |
| 1992 | 31 | 69 |
| 1991 | 29 | 70 |
| 1990 | 30 | 68 |
| 1989 | 25 | 61 |
| 1988 | 25 | 63 |
| 1987 | 24 | 61 |
| 1986 | 21 | 60 |