| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2015 | 505 | 54 |
| 2014 | 708 | 50 |
| 2013 | 669 | 53 |
| 2012 | 597 | 54 |
| 2011 | 884 | 44 |
| 2010 | 642 | 50 |
| 2009 | 526 | 50 |
| 2008 | 522 | 52 |
| 2007 | 512 | 51 |
| 2006 | 313 | 55 |
| 2005 | 214 | 60 |
| 2004 | 161 | 62 |
| 2003 | 240 | 49 |
| 2002 | 162 | 53 |
| 2001 | 161 | 54 |
| 2000 | 91 | 62 |
| 1999 | 79 | 64 |
| 1998 | 117 | 54 |
| 1997 | 126 | 53 |
| 1996 | 89 | 59 |
| 1995 | 69 | 65 |
| 1994 | 33 | 81 |
| 1993 | 38 | 77 |
| 1992 | 69 | 59 |
| 1991 | 63 | 56 |
| 1990 | 54 | 62 |
| 1989 | 40 | 55 |
| 1988 | 29 | 58 |
| 1987 | 35 | 54 |
| 1986 | 22 | 68 |