| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 198 | 35 |
| 2015 | 184 | 40 |
| 2014 | 199 | 41 |
| 2013 | 177 | 42 |
| 2012 | 126 | 47 |
| 2011 | 120 | 49 |
| 2010 | 103 | 50 |
| 2009 | 118 | 45 |
| 2008 | 163 | 40 |
| 2007 | 130 | 43 |
| 2006 | 122 | 40 |
| 2005 | 96 | 45 |
| 2004 | 37 | 53 |
| 2003 | 31 | 53 |
| 2002 | 24 | 54 |
| 2001 | 20 | 53 |
| 2000 | 17 | 58 |
| 1999 | 14 | 60 |
| 1998 | 13 | 63 |
| 1997 | 15 | 54 |
| 1996 | 16 | 51 |
| 1995 | 15 | 52 |
| 1994 | 10 | 59 |
| 1993 | 8 | 60 |
| 1992 | 7 | 57 |
| 1991 | 7 | 53 |
| 1990 | 6 | 55 |
| 1989 | 8 | 47 |
| 1988 | 9 | 46 |
| 1987 | 8 | 49 |
| 1986 | 7 | 49 |