69% (1964)

75% (1964)

59% (1955)

76% (1960)

71% (1962)

59% (1966)

74% (1962)

57% (1965)

65% (1960)

63% (1963)

60% (1965)

56% (1963)

65% (1961)

51% (1965)

64% (1964)

70% (1951)

59% (1960)

60% (1961)

50% (1960)

90% (1961)