| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 94 | 43 |
| 2015 | 90 | 59 |
| 2014 | 104 | 58 |
| 2013 | 100 | 58 |
| 2012 | 92 | 58 |
| 2011 | 94 | 58 |
| 2010 | 84 | 56 |
| 2009 | 84 | 55 |
| 2008 | 79 | 57 |
| 2007 | 52 | 58 |
| 2006 | 42 | 59 |
| 2005 | 32 | 61 |
| 2004 | 28 | 58 |
| 2003 | 9 | 85 |
| 2002 | 8 | 85 |
| 2001 | 8 | 82 |
| 2000 | 8 | 81 |
| 1999 | 7 | 80 |
| 1998 | 7 | 84 |
| 1997 | 7 | 81 |
| 1996 | 7 | 77 |
| 1995 | 7 | 71 |
| 1994 | 7 | 69 |
| 1993 | 6 | 71 |
| 1992 | 6 | 67 |
| 1991 | 5 | 68 |
| 1990 | 5 | 66 |
| 1989 | 4 | 70 |
| 1988 | 4 | 68 |
| 1987 | 3 | 69 |
| 1986 | 3 | 73 |