1996 |
74%
|
2005 |
63%
|
1983 |
67%
|
2000 |
25%
|
2007 |
67%
|
2004 |
60%
|
1998 |
54%
|
1990 |
80%
|
2010 |
62%
|
1987 |
62%
|
1995 |
60%
|
1983 |
63%
|
2001 |
56%
|