57% (1970)

83% (1962)

70% (1967)

77% (1966)

67% (1967)

74% (1963)

55% (1970)

56% (1966)

54% (1968)

64% (1967)

72% (1970)

74% (1965)

64% (1966)

51% (1970)

56% (1969)

45% (1961)

65% (1970)

74% (1962)

63% (1963)

51% (1965)