| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 70 | 105 |
| 2015 | 84 | 103 |
| 2014 | 95 | 103 |
| 2013 | 102 | 101 |
| 2012 | 88 | 105 |
| 2011 | 72 | 107 |
| 2010 | 53 | 109 |
| 2009 | 38 | 121 |
| 2008 | 51 | 116 |
| 2007 | 40 | 114 |
| 2006 | 31 | 115 |
| 2005 | 26 | 118 |
| 2004 | 22 | 121 |
| 2003 | 16 | 125 |
| 2002 | 11 | 130 |
| 2001 | 11 | 128 |
| 2000 | 9 | 134 |
| 1999 | 8 | 136 |
| 1998 | 11 | 122 |
| 1997 | 8 | 133 |
| 1996 | 8 | 135 |
| 1995 | 7 | 136 |
| 1994 | 6 | 136 |
| 1993 | 8 | 113 |
| 1992 | 8 | 114 |
| 1991 | 8 | 105 |
| 1990 | 12 | 91 |
| 1989 | 9 | 100 |
| 1988 | 8 | 100 |
| 1987 | 8 | 104 |
| 1986 | 6 | 106 |