65% (1963)

34% (1960)

45% (1962)

50% (1976)

50% (1964)

32% (1961)

10% (1968)

70% (1966)

0% (1964)

0% (1960)

43% (1969)

45% (1974)

55% (1965)

60% (1970)

60% (1960)

0% (1972)

0% (1971)

60% (1961)