| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 256 | 22 |
| 2015 | 250 | 25 |
| 2014 | 300 | 22 |
| 2013 | 295 | 24 |
| 2012 | 308 | 20 |
| 2011 | 341 | 17 |
| 2010 | 257 | 19 |
| 2009 | 186 | 25 |
| 2008 | 230 | 22 |
| 2007 | 193 | 21 |
| 2006 | 140 | 24 |
| 2005 | 119 | 26 |
| 2004 | 116 | 25 |
| 2003 | 103 | 26 |
| 2002 | 91 | 27 |
| 2001 | 74 | 29 |
| 2000 | 81 | 28 |
| 1999 | 86 | 28 |
| 1998 | 96 | 27 |
| 1997 | 111 | 27 |
| 1996 | 118 | 23 |
| 1995 | 115 | 22 |
| 1994 | 102 | 21 |
| 1993 | 92 | 21 |
| 1992 | 86 | 22 |
| 1991 | 71 | 26 |
| 1990 | 67 | 29 |
| 1989 | 70 | 23 |
| 1988 | 71 | 22 |
| 1987 | 64 | 25 |
| 1986 | 56 | 23 |