| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 18 | 109 |
| 2015 | 21 | 126 |
| 2014 | 23 | 128 |
| 2013 | 22 | 131 |
| 2012 | 21 | 131 |
| 2011 | 21 | 133 |
| 2010 | 19 | 128 |
| 2009 | 17 | 126 |
| 2008 | 17 | 127 |
| 2007 | 15 | 130 |
| 2006 | 11 | 134 |
| 2005 | 9 | 132 |
| 2004 | 11 | 130 |
| 2003 | 11 | 121 |
| 2002 | 9 | 120 |
| 2001 | 9 | 119 |
| 2000 | 9 | 118 |
| 1999 | 10 | 114 |
| 1998 | 11 | 105 |
| 1997 | 11 | 107 |
| 1996 | 11 | 102 |
| 1995 | 10 | 104 |
| 1994 | 9 | 93 |
| 1993 | 9 | 87 |
| 1992 | 9 | 86 |
| 1991 | 9 | 90 |
| 1990 | 9 | 91 |
| 1989 | 8 | 79 |
| 1988 | 8 | 78 |
| 1987 | 7 | 79 |
| 1986 | 7 | 75 |