| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 325 | 16 |
| 2015 | 375 | 13 |
| 2014 | 440 | 11 |
| 2013 | 410 | 15 |
| 2012 | 438 | 13 |
| 2011 | 473 | 11 |
| 2010 | 425 | 10 |
| 2009 | 357 | 12 |
| 2008 | 444 | 11 |
| 2007 | 430 | 10 |
| 2006 | 354 | 11 |
| 2005 | 371 | 9 |
| 2004 | 388 | 6 |
| 2003 | 342 | 8 |
| 2002 | 302 | 6 |
| 2001 | 292 | 5 |
| 2000 | 288 | 7 |
| 1999 | 336 | 6 |
| 1998 | 358 | 6 |
| 1997 | 343 | 8 |
| 1996 | 389 | 5 |
| 1995 | 394 | 4 |
| 1994 | 337 | 5 |
| 1993 | 306 | 6 |
| 1992 | 366 | 5 |
| 1991 | 334 | 7 |
| 1990 | 401 | 5 |
| 1989 | 323 | 6 |
| 1988 | 293 | 5 |
| 1987 | 291 | 4 |
| 1986 | 251 | 6 |