| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 14 | 112 |
| 2015 | 14 | 136 |
| 2014 | 15 | 141 |
| 2013 | 15 | 144 |
| 2012 | 14 | 144 |
| 2011 | 16 | 137 |
| 2010 | 15 | 137 |
| 2009 | 15 | 129 |
| 2008 | 17 | 128 |
| 2007 | 15 | 131 |
| 2006 | 13 | 131 |
| 2005 | 13 | 127 |
| 2004 | 13 | 122 |
| 2003 | 13 | 110 |
| 2002 | 11 | 109 |
| 2001 | 10 | 113 |
| 2000 | 11 | 108 |
| 1999 | 10 | 113 |
| 1998 | 10 | 112 |
| 1997 | 9 | 113 |
| 1996 | 9 | 108 |
| 1995 | 9 | 110 |
| 1994 | 14 | 79 |
| 1993 | 12 | 82 |
| 1992 | 14 | 76 |
| 1991 | 14 | 80 |
| 1990 | 13 | 77 |
| 1989 | 11 | 70 |
| 1988 | 11 | 71 |
| 1987 | 9 | 70 |
| 1986 | 8 | 69 |