1978 |
67%
|
1980 |
68%
|
2005 |
67%
|
2005 |
63%
|
1983 |
50%
|
2006 |
76%
|
1985 |
62%
|
2006 |
47%
|
2007 |
44%
|
2012 |
57%
|
2014 |
57%
|