| 时间 | 值 （美元/人） | 世界排名 |
|---|---|---|
| 2016 | 17 | 110 |
| 2015 | 15 | 121 |
| 2014 | 18 | 116 |
| 2013 | 18 | 118 |
| 2012 | 17 | 116 |
| 2011 | 17 | 113 |
| 2010 | 18 | 115 |
| 2009 | 18 | 112 |
| 2008 | 18 | 115 |
| 2007 | 16 | 114 |
| 2006 | 14 | 115 |
| 2005 | 13 | 110 |
| 2004 | 13 | 110 |
| 2003 | 11 | 111 |
| 2002 | 9 | 110 |
| 2001 | 8 | 109 |
| 2000 | 8 | 108 |
| 1999 | 10 | 106 |
| 1998 | 9 | 107 |
| 1997 | 9 | 112 |
| 1996 | 9 | 111 |
| 1995 | 8 | 109 |
| 1994 | 9 | 99 |
| 1993 | 14 | 92 |
| 1992 | 14 | 83 |
| 1991 | 16 | 79 |
| 1990 | 14 | 86 |
| 1989 | 13 | 80 |
| 1988 | 14 | 80 |
| 1987 | 14 | 74 |
| 1986 | 13 | 67 |