1974 |
80%
|
1960 |
91%
|
1971 |
63%
|
1960 |
65%
|
1967 |
74%
|
1966 |
74%
|
1965 |
74%
|
1976 |
65%
|
1975 |
64%
|
1969 |
79%
|
1974 |
84%
|
1970 |
45%
|
1968 |
69%
|
1974 |
64%
|