58% (1967)

80% (1961)

90% (1966)

70% (1973)

57% (1950)

76% (1966)

48% (1966)

35% (1952)

72% (1968)

80% (1974)

62% (1973)

54% (1968)

53% (1969)

56% (1962)

36% (1972)

68% (1969)

78% (1965)

45% (1971)

0% (1973)

35% (1951)