| 1960 |
91%
|
| 1963 |
73%
|
| 1950 |
78%
|
| 1966 |
75%
|
| 1977 |
70%
|
| 1979 |
71%
|
| 1981 |
71%
|
| 1977 |
65%
|
| 1968 |
79%
|
| 1971 |
79%
|
| 1972 |
79%
|
| 1966 |
79%
|
| 1968 |
81%
|
| 1981 |
55%
|
| 1952 |
77%
|
| 1978 |
62%
|
| 1979 |
66%
|
| 1973 |
48%
|
| 1975 |
66%
|
