61% (1966)

82% (1962)

67% (1967)

72% (1970)

57% (1970)

77% (1966)

74% (1963)

74% (1962)

70% (1967)

68% (1971)

55% (1970)

56% (1968)

65% (1970)

62% (1964)

56% (1969)

60% (1965)

50% (1969)

51% (1970)

51% (1965)

74% (1965)