| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 17 | 111 |
| 2015 | 14 | 135 |
| 2014 | 16 | 140 |
| 2013 | 16 | 142 |
| 2012 | 15 | 143 |
| 2011 | 14 | 141 |
| 2010 | 13 | 140 |
| 2009 | 13 | 136 |
| 2008 | 14 | 134 |
| 2007 | 11 | 138 |
| 2006 | 8 | 139 |
| 2005 | 7 | 135 |
| 2004 | 6 | 137 |
| 2003 | 8 | 133 |
| 2002 | 6 | 131 |
| 2001 | 6 | 130 |
| 2000 | 5 | 132 |
| 1999 | 5 | 129 |
| 1998 | 5 | 128 |
| 1997 | 4 | 131 |
| 1996 | 4 | 129 |
| 1995 | 3 | 141 |
| 1994 | 3 | 121 |
| 1993 | 4 | 108 |
| 1992 | 3 | 111 |
| 1991 | 3 | 112 |
| 1990 | 4 | 110 |
| 1989 | 3 | 91 |
| 1988 | 3 | 91 |
| 1987 | 3 | 88 |
| 1986 | 4 | 83 |