| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 18 | 147 |
| 2015 | 20 | 153 |
| 2014 | 21 | 154 |
| 2013 | 22 | 152 |
| 2012 | 26 | 146 |
| 2011 | 25 | 145 |
| 2010 | 23 | 144 |
| 2009 | 19 | 149 |
| 2008 | 18 | 152 |
| 2007 | 17 | 149 |
| 2006 | 15 | 147 |
| 2005 | 14 | 142 |
| 2004 | 14 | 136 |
| 2003 | 11 | 141 |
| 2002 | 8 | 140 |
| 2001 | 7 | 142 |
| 2000 | 8 | 137 |
| 1999 | 9 | 133 |
| 1998 | 9 | 130 |
| 1997 | 11 | 121 |
| 1996 | 11 | 121 |
| 1995 | 11 | 118 |
| 1994 | 9 | 120 |
| 1993 | 9 | 108 |
| 1992 | 9 | 106 |
| 1991 | 8 | 106 |
| 1990 | 7 | 111 |
| 1989 | 6 | 110 |
| 1988 | 6 | 112 |
| 1987 | 5 | 116 |
| 1986 | 4 | 122 |