| 时间 |
值 （美元/人） |
世界排名 |
| 2013 |
3 |
148 |
| 2012 |
3 |
147 |
| 2011 |
3 |
144 |
| 2010 |
2 |
146 |
| 2009 |
2 |
148 |
| 2008 |
3 |
150 |
| 2007 |
2 |
145 |
| 2006 |
2 |
145 |
| 2005 |
2 |
152 |
| 2004 |
2 |
148 |
| 2003 |
2 |
147 |
| 2002 |
2 |
140 |
| 2001 |
2 |
141 |
| 2000 |
3 |
133 |
| 1999 |
3 |
128 |
| 1998 |
6 |
115 |
| 1997 |
13 |
100 |
| 1996 |
16 |
87 |
| 1995 |
21 |
79 |
| 1994 |
24 |
73 |
| 1993 |
23 |
76 |
| 1992 |
23 |
71 |