69% (1964)

75% (1964)

71% (1962)

76% (1960)

59% (1955)

55% (1963)

57% (1965)

74% (1962)

65% (1960)

59% (1966)

60% (1965)

90% (1961)

45% (1953)

59% (1960)

64% (1964)

50% (1960)

51% (1965)

60% (1961)

70% (1951)

65% (1961)