| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 163 | 78 |
| 2015 | 215 | 68 |
| 2014 | 277 | 68 |
| 2013 | 271 | 66 |
| 2012 | 255 | 68 |
| 2011 | 244 | 67 |
| 2010 | 206 | 68 |
| 2009 | 151 | 74 |
| 2008 | 189 | 72 |
| 2007 | 139 | 74 |
| 2006 | 121 | 72 |
| 2005 | 103 | 71 |
| 2004 | 82 | 75 |
| 2003 | 67 | 74 |
| 2002 | 64 | 72 |
| 2001 | 54 | 74 |
| 2000 | 37 | 83 |
| 1999 | 30 | 89 |
| 1998 | 56 | 69 |
| 1997 | 50 | 69 |
| 1996 | 43 | 74 |
| 1995 | 42 | 70 |
| 1994 | 36 | 71 |
| 1993 | 26 | 73 |
| 1992 | 24 | 73 |
| 1991 | 24 | 67 |
| 1990 | 19 | 75 |
| 1989 | 19 | 72 |
| 1988 | 17 | 72 |
| 1987 | 23 | 66 |
| 1986 | 18 | 69 |