| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 468 | 53 |
| 2015 | 465 | 59 |
| 2014 | 723 | 54 |
| 2013 | 1031 | 49 |
| 2012 | 949 | 49 |
| 2011 | 865 | 49 |
| 2010 | 749 | 49 |
| 2009 | 635 | 49 |
| 2008 | 915 | 45 |
| 2007 | 701 | 48 |
| 2006 | 518 | 47 |
| 2005 | 434 | 47 |
| 2004 | 307 | 50 |
| 2003 | 240 | 53 |
| 2002 | 192 | 53 |
| 2001 | 164 | 54 |
| 2000 | 124 | 58 |
| 1999 | 124 | 56 |
| 1998 | 176 | 51 |
| 1997 | 220 | 48 |
| 1996 | 189 | 48 |
| 1995 | 181 | 47 |
| 1994 | 171 | 39 |
| 1993 | 265 | 31 |
| 1992 | 218 | 33 |
| 1991 | 224 | 29 |
| 1990 | 232 | 28 |
| 1989 | 230 | 24 |
| 1988 | 224 | 26 |
| 1987 | 192 | 25 |