| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 339 | 14 |
| 2015 | 348 | 16 |
| 2014 | 410 | 14 |
| 2013 | 476 | 11 |
| 2012 | 457 | 12 |
| 2011 | 430 | 12 |
| 2010 | 359 | 13 |
| 2009 | 276 | 16 |
| 2008 | 294 | 16 |
| 2007 | 246 | 18 |
| 2006 | 209 | 17 |
| 2005 | 174 | 18 |
| 2004 | 161 | 19 |
| 2003 | 144 | 18 |
| 2002 | 117 | 20 |
| 2001 | 103 | 23 |
| 2000 | 107 | 23 |
| 1999 | 113 | 24 |
| 1998 | 117 | 23 |
| 1997 | 136 | 20 |
| 1996 | 166 | 15 |
| 1995 | 154 | 15 |
| 1994 | 127 | 16 |
| 1993 | 103 | 19 |
| 1992 | 137 | 16 |
| 1991 | 124 | 17 |
| 1990 | 107 | 19 |
| 1989 | 109 | 13 |
| 1988 | 100 | 14 |
| 1987 | 80 | 19 |
| 1986 | 68 | 19 |