| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 83 | 97 |
| 2015 | 89 | 107 |
| 2014 | 82 | 114 |
| 2013 | 72 | 125 |
| 2012 | 63 | 129 |
| 2011 | 62 | 128 |
| 2010 | 58 | 118 |
| 2009 | 45 | 124 |
| 2008 | 42 | 133 |
| 2007 | 33 | 134 |
| 2006 | 28 | 131 |
| 2005 | 24 | 131 |
| 2004 | 21 | 131 |
| 2003 | 18 | 130 |
| 2002 | 17 | 125 |
| 2001 | 20 | 115 |
| 2000 | 18 | 115 |
| 1999 | 15 | 121 |
| 1998 | 16 | 119 |
| 1997 | 19 | 114 |
| 1996 | 16 | 118 |
| 1995 | 15 | 115 |
| 1994 | 13 | 112 |
| 1993 | 11 | 112 |
| 1992 | 9 | 118 |
| 1991 | 9 | 116 |
| 1990 | 8 | 120 |
| 1989 | 8 | 99 |
| 1988 | 8 | 96 |
| 1987 | 6 | 100 |
| 1986 | 6 | 102 |