| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 467 | 48 |
| 2015 | 517 | 48 |
| 2014 | 586 | 50 |
| 2013 | 550 | 51 |
| 2012 | 504 | 53 |
| 2011 | 472 | 53 |
| 2010 | 405 | 52 |
| 2009 | 393 | 49 |
| 2008 | 395 | 54 |
| 2007 | 276 | 60 |
| 2006 | 215 | 61 |
| 2005 | 204 | 57 |
| 2004 | 182 | 51 |
| 2003 | 124 | 56 |
| 2002 | 120 | 52 |
| 2001 | 99 | 58 |
| 2000 | 92 | 58 |
| 1999 | 92 | 56 |
| 1998 | 94 | 54 |
| 1997 | 87 | 58 |
| 1996 | 91 | 55 |
| 1995 | 101 | 51 |
| 1994 | 94 | 48 |
| 1993 | 88 | 47 |
| 1992 | 86 | 46 |
| 1991 | 78 | 47 |
| 1990 | 98 | 41 |
| 1989 | 95 | 42 |
| 1988 | 77 | 44 |
| 1987 | 70 | 47 |
| 1986 | 92 | 40 |