1959 |
75%
|
1974 |
72%
|
1973 |
72%
|
1975 |
72%
|
1976 |
72%
|
1975 |
72%
|
1974 |
72%
|
1978 |
64%
|
1979 |
64%
|
1977 |
64%
|
1978 |
64%
|
1980 |
64%
|
1979 |
64%
|
1974 |
59%
|