| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 106 | 89 |
| 2015 | 122 | 95 |
| 2014 | 146 | 90 |
| 2013 | 152 | 92 |
| 2012 | 149 | 90 |
| 2011 | 129 | 93 |
| 2010 | 102 | 97 |
| 2009 | 83 | 99 |
| 2008 | 106 | 98 |
| 2007 | 71 | 105 |
| 2006 | 62 | 103 |
| 2005 | 49 | 103 |
| 2004 | 40 | 106 |
| 2003 | 29 | 108 |
| 2002 | 26 | 107 |
| 2001 | 41 | 91 |
| 2000 | 46 | 85 |
| 1999 | 44 | 84 |
| 1998 | 49 | 79 |
| 1997 | 49 | 79 |
| 1996 | 41 | 85 |
| 1995 | 37 | 85 |
| 1994 | 36 | 79 |
| 1993 | 29 | 83 |
| 1992 | 25 | 85 |
| 1991 | 20 | 89 |
| 1990 | 17 | 96 |
| 1989 | 15 | 86 |
| 1988 | 15 | 85 |
| 1987 | 14 | 84 |
| 1986 | 12 | 83 |