| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 241 | 31 |
| 2015 | 229 | 36 |
| 2014 | 211 | 39 |
| 2013 | 202 | 40 |
| 2012 | 161 | 42 |
| 2011 | 156 | 43 |
| 2010 | 152 | 43 |
| 2009 | 148 | 39 |
| 2008 | 177 | 38 |
| 2007 | 172 | 36 |
| 2006 | 159 | 34 |
| 2005 | 157 | 31 |
| 2004 | 136 | 31 |
| 2003 | 123 | 28 |
| 2002 | 123 | 27 |
| 2001 | 123 | 27 |
| 2000 | 133 | 26 |
| 1999 | 114 | 26 |
| 1998 | 113 | 23 |
| 1997 | 193 | 14 |
| 1996 | 164 | 16 |
| 1995 | 145 | 17 |
| 1994 | 159 | 13 |
| 1993 | 137 | 11 |
| 1992 | 129 | 13 |
| 1991 | 119 | 14 |
| 1990 | 108 | 14 |
| 1989 | 94 | 14 |
| 1988 | 77 | 14 |
| 1987 | 65 | 14 |
| 1986 | 54 | 14 |