| 1974 |
80%
|
| 1959 |
91%
|
| 1961 |
91%
|
| 1966 |
65%
|
| 1972 |
61%
|
| 1966 |
75%
|
| 1963 |
66%
|
| 1966 |
74%
|
| 1975 |
64%
|
| 1968 |
79%
|
| 1967 |
79%
|
| 1969 |
79%
|
| 1968 |
81%
|
| 1965 |
81%
|
| 1967 |
81%
|
| 1951 |
66%
|
| 1974 |
84%
|
| 1966 |
59%
|
| 1973 |
59%
|
| 1964 |
67%
|
| 1968 |
69%
|
| 1974 |
63%
|
