| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 295 | 28 |
| 2015 | 295 | 31 |
| 2014 | 303 | 31 |
| 2013 | 284 | 32 |
| 2012 | 262 | 32 |
| 2011 | 261 | 32 |
| 2010 | 225 | 32 |
| 2009 | 228 | 32 |
| 2008 | 251 | 32 |
| 2007 | 241 | 31 |
| 2006 | 231 | 29 |
| 2005 | 223 | 26 |
| 2004 | 200 | 25 |
| 2003 | 177 | 23 |
| 2002 | 171 | 22 |
| 2001 | 163 | 22 |
| 2000 | 164 | 20 |
| 1999 | 139 | 21 |
| 1998 | 124 | 23 |
| 1997 | 109 | 26 |
| 1996 | 91 | 26 |
| 1995 | 90 | 24 |
| 1994 | 124 | 18 |
| 1993 | 118 | 15 |
| 1992 | 116 | 15 |
| 1991 | 107 | 15 |
| 1990 | 101 | 16 |
| 1989 | 77 | 16 |
| 1988 | 61 | 14 |
| 1987 | 51 | 14 |
| 1986 | 50 | 14 |