| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 243 | 31 |
| 2015 | 229 | 35 |
| 2014 | 230 | 37 |
| 2013 | 208 | 36 |
| 2012 | 218 | 35 |
| 2011 | 200 | 37 |
| 2010 | 184 | 37 |
| 2009 | 172 | 35 |
| 2008 | 196 | 36 |
| 2007 | 175 | 34 |
| 2006 | 149 | 34 |
| 2005 | 136 | 34 |
| 2004 | 132 | 31 |
| 2003 | 110 | 29 |
| 2002 | 106 | 28 |
| 2001 | 117 | 27 |
| 2000 | 119 | 27 |
| 1999 | 100 | 27 |
| 1998 | 91 | 28 |
| 1997 | 88 | 27 |
| 1996 | 87 | 27 |
| 1995 | 81 | 26 |
| 1994 | 74 | 25 |
| 1993 | 62 | 25 |
| 1992 | 54 | 26 |
| 1991 | 51 | 25 |
| 1990 | 48 | 24 |
| 1989 | 42 | 24 |
| 1988 | 37 | 22 |
| 1987 | 33 | 23 |
| 1986 | 27 | 24 |