1954 |
85%
|
1960 |
91%
|
1977 |
65%
|
1967 |
79%
|
1969 |
79%
|
1966 |
79%
|
1966 |
81%
|
1968 |
81%
|
1965 |
81%
|
1967 |
81%
|
1974 |
84%
|
1964 |
85%
|
1940 |
60%
|
1944 |
54%
|
1966 |
72%
|
1970 |
69%
|
1973 |
65%
|