| 时间 |
值 （美元/人） |
世界排名 |
| 2016 |
76 |
71 |
| 2015 |
80 |
78 |
| 2014 |
89 |
80 |
| 2013 |
96 |
77 |
| 2012 |
91 |
76 |
| 2011 |
81 |
80 |
| 2010 |
81 |
77 |
| 2009 |
75 |
78 |
| 2008 |
104 |
73 |
| 2007 |
88 |
73 |
| 2006 |
64 |
77 |
| 2005 |
51 |
77 |
| 2004 |
36 |
80 |
| 2003 |
30 |
82 |
| 2002 |
24 |
87 |
| 2001 |
22 |
86 |
| 2000 |
23 |
83 |
| 1999 |
19 |
88 |
| 1998 |
28 |
75 |
| 1997 |
41 |
68 |
| 1996 |
29 |
74 |
| 1995 |
26 |
75 |
| 1994 |
25 |
71 |
| 1993 |
6 |
115 |