68% (1967)

79% (1962)

75% (1965)

73% (1966)

78% (1961)

73% (1963)

60% (1966)

84% (1965)

72% (1960)

56% (1983)

55% (1966)

50% (1976)

76% (1963)

52% (1962)

64% (1961)

64% (1966)

54% (1972)

47% (1968)

59% (1965)

67% (1969)