| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 392 | 23 |
| 2015 | 356 | 28 |
| 2014 | 356 | 32 |
| 2013 | 349 | 32 |
| 2012 | 318 | 32 |
| 2011 | 294 | 32 |
| 2010 | 254 | 32 |
| 2009 | 225 | 32 |
| 2008 | 250 | 33 |
| 2007 | 214 | 33 |
| 2006 | 190 | 30 |
| 2005 | 168 | 30 |
| 2004 | 206 | 25 |
| 2003 | 131 | 27 |
| 2002 | 116 | 28 |
| 2001 | 125 | 26 |
| 2000 | 156 | 23 |
| 1999 | 122 | 24 |
| 1998 | 100 | 26 |
| 1997 | 91 | 25 |
| 1996 | 83 | 28 |
| 1995 | 79 | 28 |
| 1994 | 65 | 27 |
| 1993 | 59 | 24 |
| 1992 | 58 | 22 |
| 1991 | 46 | 24 |
| 1990 | 45 | 25 |
| 1989 | 43 | 21 |
| 1988 | 41 | 21 |
| 1987 | 38 | 19 |
| 1986 | 31 | 20 |