| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 75 | 99 |
| 2015 | 74 | 118 |
| 2014 | 73 | 121 |
| 2013 | 72 | 124 |
| 2012 | 71 | 121 |
| 2011 | 65 | 126 |
| 2010 | 52 | 124 |
| 2009 | 44 | 126 |
| 2008 | 53 | 124 |
| 2007 | 45 | 123 |
| 2006 | 38 | 115 |
| 2005 | 30 | 123 |
| 2004 | 26 | 122 |
| 2003 | 22 | 122 |
| 2002 | 21 | 121 |
| 2001 | 21 | 113 |
| 2000 | 21 | 110 |
| 1999 | 21 | 108 |
| 1998 | 17 | 115 |
| 1997 | 17 | 116 |
| 1996 | 14 | 124 |
| 1995 | 12 | 126 |
| 1994 | 10 | 124 |
| 1993 | 8 | 120 |
| 1992 | 10 | 115 |
| 1991 | 8 | 123 |
| 1990 | 5 | 132 |
| 1989 | 7 | 104 |
| 1988 | 15 | 81 |
| 1987 | 5 | 105 |
| 1986 | 6 | 98 |