61% (1966)

59% (1956)

63% (1966)

55% (1970)

58% (1966)

62% (1972)

43% (1974)

42% (1970)

64% (1965)

50% (1966)

48% (1985)

30% (1973)

34% (1976)

54% (1967)

20% (1968)

0% (1970)

0% (1963)

52% (1976)

20% (1972)

68% (1967)