| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 2104 | 1 |
| 2015 | 2000 | 3 |
| 2014 | 2204 | 4 |
| 2013 | 2094 | 4 |
| 2012 | 1864 | 5 |
| 2011 | 1980 | 4 |
| 2010 | 1910 | 3 |
| 2009 | 1868 | 2 |
| 2008 | 1929 | 2 |
| 2007 | 1671 | 2 |
| 2006 | 1622 | 2 |
| 2005 | 1561 | 2 |
| 2004 | 1618 | 2 |
| 2003 | 1603 | 1 |
| 2002 | 1522 | 2 |
| 2001 | 1480 | 2 |
| 2000 | 1489 | 2 |
| 1999 | 1405 | 2 |
| 1998 | 1524 | 1 |
| 1997 | 1652 | 1 |
| 1996 | 1673 | 2 |
| 1995 | 1597 | 2 |
| 1994 | 1607 | 1 |
| 1993 | 1662 | 1 |
| 1992 | 1601 | 1 |
| 1991 | 2114 | 2 |
| 1990 | 1552 | 3 |
| 1989 | 1342 | 2 |
| 1988 | 1688 | 2 |
| 1987 | 1372 | 2 |
| 1986 | 1020 | 3 |