| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 19 | 127 |
| 2015 | 19 | 131 |
| 2014 | 18 | 140 |
| 2013 | 20 | 135 |
| 2012 | 17 | 138 |
| 2011 | 18 | 138 |
| 2010 | 14 | 139 |
| 2009 | 13 | 135 |
| 2008 | 16 | 133 |
| 2007 | 14 | 133 |
| 2006 | 13 | 133 |
| 2005 | 15 | 126 |
| 2004 | 9 | 130 |
| 2003 | 9 | 125 |
| 2002 | 8 | 125 |
| 2001 | 10 | 120 |
| 2000 | 10 | 115 |
| 1999 | 10 | 113 |
| 1998 | 11 | 109 |
| 1997 | 13 | 106 |
| 1996 | 14 | 104 |
| 1995 | 12 | 105 |
| 1994 | 10 | 107 |
| 1993 | 9 | 98 |
| 1992 | 10 | 97 |
| 1991 | 10 | 91 |
| 1990 | 10 | 93 |
| 1989 | 8 | 96 |
| 1988 | 7 | 96 |
| 1987 | 6 | 99 |
| 1986 | 5 | 102 |