| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 47 | 107 |
| 2015 | 49 | 125 |
| 2014 | 54 | 126 |
| 2013 | 53 | 127 |
| 2012 | 51 | 124 |
| 2011 | 48 | 124 |
| 2010 | 42 | 126 |
| 2009 | 36 | 126 |
| 2008 | 36 | 127 |
| 2007 | 34 | 125 |
| 2006 | 30 | 123 |
| 2005 | 26 | 125 |
| 2004 | 24 | 124 |
| 2003 | 23 | 120 |
| 2002 | 22 | 112 |
| 2001 | 22 | 113 |
| 2000 | 21 | 113 |
| 1999 | 20 | 112 |
| 1998 | 19 | 114 |
| 1997 | 22 | 104 |
| 1996 | 22 | 101 |
| 1995 | 21 | 99 |
| 1994 | 18 | 85 |
| 1993 | 17 | 86 |
| 1992 | 16 | 86 |
| 1991 | 15 | 87 |
| 1990 | 13 | 88 |
| 1989 | 12 | 79 |
| 1988 | 12 | 75 |
| 1987 | 11 | 76 |
| 1986 | 9 | 73 |