| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 1777 | 5 |
| 2015 | 1697 | 5 |
| 2014 | 1754 | 6 |
| 2013 | 1731 | 6 |
| 2012 | 1726 | 7 |
| 2011 | 1721 | 5 |
| 2010 | 1597 | 6 |
| 2009 | 1511 | 6 |
| 2008 | 1540 | 7 |
| 2007 | 1421 | 5 |
| 2006 | 1325 | 6 |
| 2005 | 1281 | 6 |
| 2004 | 1210 | 6 |
| 2003 | 1148 | 5 |
| 2002 | 1084 | 6 |
| 2001 | 1041 | 6 |
| 2000 | 1075 | 4 |
| 1999 | 1135 | 4 |
| 1998 | 1137 | 4 |
| 1997 | 1174 | 5 |
| 1996 | 1117 | 3 |
| 1995 | 1042 | 4 |
| 1994 | 818 | 5 |
| 1993 | 749 | 6 |
| 1992 | 722 | 10 |
| 1991 | 645 | 12 |
| 1990 | 550 | 13 |
| 1989 | 466 | 12 |
| 1988 | 405 | 18 |
| 1987 | 367 | 17 |
| 1986 | 370 | 11 |