1963 |
91%
|
1991 |
66%
|
1977 |
84%
|
1978 |
70%
|
1972 |
79%
|
1973 |
79%
|
1972 |
79%
|
1977 |
75%
|
1975 |
74%
|
1974 |
74%
|
1972 |
57%
|
1977 |
64%
|
1975 |
60%
|
1975 |
61%
|
1974 |
64%
|
1977 |
77%
|
1972 |
55%
|