| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 999 | 7 |
| 2015 | 1119 | 8 |
| 2014 | 1119 | 10 |
| 2013 | 1141 | 9 |
| 2012 | 1149 | 9 |
| 2011 | 1138 | 9 |
| 2010 | 1012 | 10 |
| 2009 | 825 | 14 |
| 2008 | 936 | 14 |
| 2007 | 774 | 13 |
| 2006 | 684 | 15 |
| 2005 | 639 | 15 |
| 2004 | 576 | 16 |
| 2003 | 448 | 19 |
| 2002 | 389 | 20 |
| 2001 | 376 | 19 |
| 2000 | 411 | 16 |
| 1999 | 399 | 19 |
| 1998 | 410 | 20 |
| 1997 | 452 | 17 |
| 1996 | 434 | 19 |
| 1995 | 425 | 19 |
| 1994 | 395 | 16 |
| 1993 | 394 | 16 |
| 1992 | 412 | 19 |
| 1991 | 409 | 22 |
| 1990 | 387 | 23 |
| 1989 | 386 | 20 |
| 1988 | 329 | 23 |
| 1987 | 294 | 22 |
| 1986 | 301 | 16 |