68% (1967)

83% (1962)

78% (1966)

57% (1970)

55% (1970)

74% (1963)

72% (1970)

70% (1967)

56% (1968)

75% (1962)

54% (1972)

50% (1970)

62% (1964)

56% (1969)

55% (1966)

67% (1964)

68% (1971)

65% (1970)

63% (1966)

63% (1963)