62% (1956)

72% (1965)

54% (1962)

80% (1952)

58% (1960)

35% (1956)

57% (1948)

48% (1974)

52% (1967)

65% (1958)

53% (1963)

30% (1951)

50% (1957)

70% (1954)

54% (1961)

40% (1962)

50% (1962)

63% (1969)

55% (1960)

20% (1962)