| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 128 | 83 |
| 2015 | 133 | 96 |
| 2014 | 129 | 99 |
| 2013 | 121 | 100 |
| 2012 | 109 | 101 |
| 2011 | 100 | 99 |
| 2010 | 91 | 99 |
| 2009 | 81 | 99 |
| 2008 | 90 | 99 |
| 2007 | 78 | 97 |
| 2006 | 70 | 95 |
| 2005 | 62 | 95 |
| 2004 | 52 | 96 |
| 2003 | 50 | 92 |
| 2002 | 46 | 91 |
| 2001 | 44 | 90 |
| 2000 | 38 | 92 |
| 1999 | 36 | 92 |
| 1998 | 33 | 93 |
| 1997 | 29 | 92 |
| 1996 | 28 | 90 |
| 1995 | 26 | 91 |
| 1994 | 23 | 78 |
| 1993 | 23 | 79 |
| 1992 | 26 | 75 |
| 1991 | 24 | 77 |
| 1990 | 24 | 74 |
| 1989 | 23 | 63 |
| 1988 | 26 | 62 |
| 1987 | 27 | 60 |
| 1986 | 28 | 57 |