| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 834 | 9 |
| 2015 | 831 | 11 |
| 2014 | 959 | 12 |
| 2013 | 946 | 12 |
| 2012 | 914 | 12 |
| 2011 | 989 | 11 |
| 2010 | 950 | 12 |
| 2009 | 1034 | 10 |
| 2008 | 1025 | 11 |
| 2007 | 947 | 11 |
| 2006 | 857 | 11 |
| 2005 | 837 | 11 |
| 2004 | 845 | 11 |
| 2003 | 738 | 11 |
| 2002 | 589 | 13 |
| 2001 | 542 | 11 |
| 2000 | 555 | 11 |
| 1999 | 643 | 10 |
| 1998 | 665 | 10 |
| 1997 | 689 | 10 |
| 1996 | 777 | 8 |
| 1995 | 802 | 8 |
| 1994 | 748 | 8 |
| 1993 | 721 | 8 |
| 1992 | 767 | 8 |
| 1991 | 729 | 10 |
| 1990 | 728 | 9 |
| 1989 | 607 | 9 |
| 1988 | 624 | 9 |
| 1987 | 606 | 8 |
| 1986 | 498 | 6 |