| 时间 | 值 （亿美元） | 世界排名 |
|---|---|---|
| 2016 | 1206 | 31 |
| 2015 | 1236 | 34 |
| 2014 | 1493 | 34 |
| 2013 | 1490 | 32 |
| 2012 | 1411 | 33 |
| 2011 | 1419 | 33 |
| 2010 | 1225 | 33 |
| 2009 | 1079 | 33 |
| 2008 | 1339 | 33 |
| 2007 | 1198 | 32 |
| 2006 | 958 | 32 |
| 2005 | 847 | 31 |
| 2004 | 738 | 30 |
| 2003 | 616 | 29 |
| 2002 | 533 | 29 |
| 2001 | 493 | 29 |
| 2000 | 495 | 30 |
| 1999 | 510 | 27 |
| 1998 | 541 | 26 |
| 1997 | 524 | 28 |
| 1996 | 510 | 26 |
| 1995 | 473 | 26 |
| 1994 | 399 | 26 |
| 1993 | 372 | 27 |
| 1992 | 399 | 25 |
| 1991 | 384 | 26 |
| 1990 | 397 | 21 |
| 1989 | 347 | 23 |
| 1988 | 337 | 21 |
| 1987 | 320 | 20 |
| 1986 | 291 | 19 |