| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 49 | 106 |
| 2015 | 53 | 123 |
| 2014 | 57 | 124 |
| 2013 | 56 | 124 |
| 2012 | 51 | 127 |
| 2011 | 50 | 121 |
| 2010 | 45 | 125 |
| 2009 | 43 | 122 |
| 2008 | 50 | 119 |
| 2007 | 39 | 124 |
| 2006 | 28 | 126 |
| 2005 | 26 | 126 |
| 2004 | 22 | 128 |
| 2003 | 28 | 109 |
| 2002 | 22 | 113 |
| 2001 | 24 | 110 |
| 2000 | 20 | 116 |
| 1999 | 19 | 113 |
| 1998 | 19 | 113 |
| 1997 | 18 | 114 |
| 1996 | 23 | 97 |
| 1995 | 19 | 105 |
| 1994 | 19 | 84 |
| 1993 | 19 | 85 |
| 1992 | 16 | 85 |
| 1991 | 14 | 91 |
| 1990 | 16 | 82 |
| 1989 | 12 | 76 |
| 1988 | 12 | 77 |
| 1987 | 11 | 74 |
| 1986 | 15 | 69 |