| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 613 | 12 |
| 2015 | 592 | 14 |
| 2014 | 719 | 15 |
| 2013 | 751 | 14 |
| 2012 | 791 | 14 |
| 2011 | 811 | 13 |
| 2010 | 812 | 14 |
| 2009 | 785 | 15 |
| 2008 | 872 | 15 |
| 2007 | 765 | 15 |
| 2006 | 717 | 13 |
| 2005 | 640 | 13 |
| 2004 | 662 | 12 |
| 2003 | 593 | 14 |
| 2002 | 501 | 14 |
| 2001 | 471 | 13 |
| 2000 | 448 | 14 |
| 1999 | 523 | 14 |
| 1998 | 537 | 13 |
| 1997 | 531 | 15 |
| 1996 | 586 | 13 |
| 1995 | 596 | 12 |
| 1994 | 522 | 12 |
| 1993 | 517 | 13 |
| 1992 | 549 | 13 |
| 1991 | 518 | 15 |
| 1990 | 515 | 16 |
| 1989 | 425 | 17 |
| 1988 | 452 | 14 |
| 1987 | 418 | 16 |
| 1986 | 322 | 15 |