| 时间 |
值 （美元/人） |
世界排名 |
| 2015 |
234 |
40 |
| 2014 |
249 |
43 |
| 2013 |
237 |
44 |
| 2012 |
253 |
39 |
| 2011 |
187 |
50 |
| 2010 |
189 |
47 |
| 2009 |
185 |
47 |
| 2008 |
179 |
52 |
| 2007 |
167 |
50 |
| 2006 |
151 |
46 |
| 2005 |
146 |
47 |
| 2004 |
116 |
48 |
| 2003 |
112 |
48 |
| 1993 |
38 |
60 |
| 1991 |
148 |
34 |
| 1990 |
173 |
34 |
| 1989 |
168 |
32 |
| 1988 |
172 |
33 |
| 1987 |
161 |
30 |
| 1986 |
154 |
28 |