| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 39 | 91 |
| 2015 | 47 | 103 |
| 2014 | 98 | 87 |
| 2013 | 101 | 88 |
| 2012 | 102 | 86 |
| 2011 | 111 | 86 |
| 2010 | 91 | 86 |
| 2009 | 68 | 86 |
| 2008 | 92 | 83 |
| 2007 | 61 | 87 |
| 2006 | 58 | 82 |
| 2005 | 44 | 85 |
| 2004 | 31 | 91 |
| 2003 | 21 | 100 |
| 2002 | 19 | 100 |
| 2001 | 18 | 101 |
| 2000 | 23 | 89 |
| 1999 | 14 | 99 |
| 1998 | 9 | 117 |
| 1997 | 13 | 101 |
| 1996 | 13 | 97 |
| 1995 | 9 | 107 |
| 1994 | 8 | 97 |
| 1993 | 7 | 96 |
| 1992 | 10 | 83 |
| 1991 | 10 | 84 |
| 1990 | 11 | 81 |
| 1989 | 9 | 76 |
| 1988 | 7 | 79 |
| 1987 | 8 | 77 |
| 1986 | 6 | 77 |