1961 |
91%
|
1963 |
66%
|
1965 |
74%
|
1965 |
74%
|
1977 |
70%
|
1981 |
71%
|
1965 |
81%
|
1967 |
81%
|
1974 |
84%
|
1961 |
38%
|