| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 187 | 73 |
| 2015 | 203 | 72 |
| 2014 | 232 | 71 |
| 2013 | 240 | 72 |
| 2012 | 228 | 71 |
| 2011 | 218 | 71 |
| 2010 | 167 | 74 |
| 2009 | 139 | 76 |
| 2008 | 157 | 79 |
| 2007 | 133 | 79 |
| 2006 | 108 | 79 |
| 2005 | 96 | 77 |
| 2004 | 36 | 99 |
| 2003 | 31 | 96 |
| 2002 | 30 | 92 |
| 2001 | 30 | 93 |
| 2000 | 34 | 86 |
| 1999 | 35 | 83 |
| 1998 | 34 | 84 |
| 1997 | 30 | 89 |
| 1996 | 28 | 90 |
| 1995 | 25 | 90 |
| 1994 | 24 | 81 |
| 1993 | 22 | 76 |
| 1992 | 20 | 79 |
| 1991 | 17 | 82 |
| 1990 | 15 | 86 |
| 1989 | 10 | 96 |
| 1988 | 8 | 105 |
| 1987 | 13 | 78 |
| 1986 | 12 | 77 |