1978 |
85%
|
1985 |
77%
|
1967 |
79%
|
1985 |
71%
|
2010 |
74%
|
1985 |
74%
|
1981 |
66%
|
1970 |
48%
|
1988 |
51%
|
1973 |
65%
|
1986 |
57%
|
1980 |
53%
|