| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 348 | 13 |
| 2015 | 296 | 21 |
| 2014 | 353 | 16 |
| 2013 | 334 | 18 |
| 2012 | 316 | 17 |
| 2011 | 371 | 15 |
| 2010 | 302 | 17 |
| 2009 | 176 | 26 |
| 2008 | 265 | 17 |
| 2007 | 214 | 19 |
| 2006 | 161 | 20 |
| 2005 | 158 | 19 |
| 2004 | 138 | 20 |
| 2003 | 132 | 20 |
| 2002 | 100 | 24 |
| 2001 | 123 | 19 |
| 2000 | 133 | 17 |
| 1999 | 126 | 18 |
| 1998 | 157 | 15 |
| 1997 | 153 | 17 |
| 1996 | 153 | 17 |
| 1995 | 138 | 18 |
| 1994 | 131 | 15 |
| 1993 | 122 | 15 |
| 1992 | 137 | 15 |
| 1991 | 127 | 15 |
| 1990 | 115 | 18 |
| 1989 | 74 | 21 |
| 1988 | 113 | 13 |
| 1987 | 90 | 14 |
| 1986 | 87 | 11 |