| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 377 | 10 |
| 2015 | 391 | 12 |
| 2014 | 436 | 12 |
| 2013 | 427 | 14 |
| 2012 | 405 | 15 |
| 2011 | 379 | 14 |
| 2010 | 349 | 14 |
| 2009 | 302 | 14 |
| 2008 | 353 | 14 |
| 2007 | 333 | 13 |
| 2006 | 297 | 13 |
| 2005 | 280 | 13 |
| 2004 | 263 | 13 |
| 2003 | 243 | 12 |
| 2002 | 251 | 10 |
| 2001 | 252 | 8 |
| 2000 | 230 | 10 |
| 1999 | 217 | 11 |
| 1998 | 201 | 11 |
| 1997 | 201 | 14 |
| 1996 | 180 | 13 |
| 1995 | 144 | 16 |
| 1994 | 217 | 10 |
| 1993 | 217 | 11 |
| 1992 | 222 | 11 |
| 1991 | 216 | 11 |
| 1990 | 189 | 12 |
| 1989 | 159 | 12 |
| 1988 | 133 | 11 |
| 1987 | 123 | 12 |
| 1986 | 123 | 8 |