| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 306 | 26 |
| 2015 | 308 | 30 |
| 2014 | 331 | 30 |
| 2013 | 344 | 29 |
| 2012 | 336 | 29 |
| 2011 | 312 | 30 |
| 2010 | 260 | 31 |
| 2009 | 229 | 31 |
| 2008 | 282 | 31 |
| 2007 | 243 | 29 |
| 2006 | 213 | 30 |
| 2005 | 220 | 27 |
| 2004 | 206 | 24 |
| 2003 | 172 | 25 |
| 2002 | 168 | 23 |
| 2001 | 156 | 23 |
| 2000 | 154 | 23 |
| 1999 | 121 | 25 |
| 1998 | 119 | 25 |
| 1997 | 162 | 18 |
| 1996 | 148 | 19 |
| 1995 | 132 | 20 |
| 1994 | 111 | 21 |
| 1993 | 96 | 20 |
| 1992 | 79 | 20 |
| 1991 | 64 | 22 |
| 1990 | 59 | 22 |
| 1989 | 53 | 20 |
| 1988 | 45 | 19 |
| 1987 | 43 | 19 |
| 1986 | 41 | 15 |