| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 98 | 90 |
| 2015 | 103 | 94 |
| 2014 | 122 | 90 |
| 2013 | 121 | 92 |
| 2012 | 116 | 91 |
| 2011 | 124 | 87 |
| 2010 | 100 | 89 |
| 2009 | 69 | 98 |
| 2008 | 90 | 97 |
| 2007 | 59 | 101 |
| 2006 | 47 | 103 |
| 2005 | 37 | 103 |
| 2004 | 31 | 107 |
| 2003 | 22 | 109 |
| 2002 | 17 | 116 |
| 2001 | 22 | 103 |
| 2000 | 22 | 102 |
| 1999 | 19 | 105 |
| 1998 | 29 | 93 |
| 1997 | 34 | 84 |
| 1996 | 32 | 82 |
| 1995 | 31 | 80 |
| 1994 | 24 | 82 |
| 1993 | 17 | 88 |
| 1992 | 14 | 94 |
| 1991 | 15 | 88 |
| 1990 | 14 | 88 |
| 1989 | 8 | 107 |
| 1988 | 6 | 114 |
| 1987 | 6 | 110 |
| 1986 | 6 | 109 |