| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 24 | 137 |
| 2015 | 27 | 142 |
| 2014 | 33 | 143 |
| 2013 | 32 | 141 |
| 2012 | 32 | 139 |
| 2011 | 37 | 135 |
| 2010 | 33 | 133 |
| 2009 | 26 | 134 |
| 2008 | 32 | 136 |
| 2007 | 28 | 132 |
| 2006 | 21 | 132 |
| 2005 | 18 | 131 |
| 2004 | 16 | 133 |
| 2003 | 15 | 126 |
| 2002 | 10 | 135 |
| 2001 | 9 | 135 |
| 2000 | 9 | 133 |
| 1999 | 10 | 130 |
| 1998 | 9 | 131 |
| 1997 | 9 | 130 |
| 1996 | 10 | 127 |
| 1995 | 10 | 124 |
| 1994 | 9 | 121 |
| 1993 | 9 | 109 |
| 1992 | 9 | 105 |
| 1991 | 9 | 103 |
| 1990 | 9 | 105 |
| 1989 | 8 | 106 |
| 1988 | 6 | 110 |
| 1987 | 6 | 109 |
| 1986 | 5 | 112 |