| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 276 | 29 |
| 2015 | 308 | 32 |
| 2014 | 410 | 30 |
| 2013 | 370 | 30 |
| 2012 | 349 | 31 |
| 2011 | 400 | 28 |
| 2010 | 375 | 25 |
| 2009 | 379 | 24 |
| 2008 | 506 | 23 |
| 2007 | 432 | 23 |
| 2006 | 358 | 22 |
| 2005 | 339 | 22 |
| 2004 | 331 | 20 |
| 2003 | 243 | 19 |
| 2002 | 201 | 19 |
| 2001 | 195 | 18 |
| 2000 | 192 | 19 |
| 1999 | 166 | 19 |
| 1997 | 92 | 24 |
| 1996 | 93 | 25 |
| 1995 | 95 | 23 |
| 1994 | 91 | 21 |
| 1993 | 82 | 20 |
| 1992 | 86 | 20 |
| 1991 | 71 | 18 |
| 1990 | 65 | 18 |
| 1989 | 48 | 19 |
| 1988 | 51 | 17 |
| 1987 | 43 | 16 |
| 1986 | 32 | 18 |