| 1959 |
85%
|
| 1960 |
85%
|
| 1961 |
85%
|
| 1968 |
79%
|
| 1971 |
79%
|
| 1966 |
79%
|
| 1974 |
70%
|
| 1966 |
51%
|
| 1966 |
37%
|
| 1972 |
55%
|
| 1978 |
75%
|
