78% (1976)

80% (1967)

50% (1957)

45% (1967)

62% (1964)

79% (1973)

49% (1967)

75% (1978)

69% (1973)

64% (1967)

50% (1970)

49% (1976)

54% (1962)

53% (1962)

59% (1977)

57% (1974)

50% (1969)

50% (1966)

63% (1966)

49% (1965)