| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 188 | 71 |
| 2015 | 192 | 81 |
| 2014 | 197 | 82 |
| 2013 | 188 | 85 |
| 2012 | 182 | 84 |
| 2011 | 178 | 82 |
| 2010 | 150 | 80 |
| 2009 | 125 | 81 |
| 2008 | 154 | 85 |
| 2007 | 144 | 82 |
| 2006 | 127 | 79 |
| 2005 | 112 | 79 |
| 2004 | 101 | 73 |
| 2003 | 88 | 69 |
| 2002 | 83 | 68 |
| 2001 | 77 | 68 |
| 2000 | 56 | 73 |
| 1999 | 50 | 76 |
| 1998 | 51 | 77 |
| 1997 | 42 | 85 |
| 1996 | 35 | 90 |
| 1995 | 37 | 84 |
| 1994 | 32 | 82 |
| 1993 | 30 | 82 |
| 1992 | 28 | 81 |
| 1991 | 20 | 88 |
| 1990 | 19 | 91 |
| 1989 | 19 | 77 |
| 1988 | 17 | 77 |
| 1987 | 16 | 76 |
| 1986 | 11 | 88 |