76% (1965)

79% (1973)

73% (1974)

38% (1959)

69% (1968)

58% (1979)

79% (1961)

49% (1944)

59% (1972)

60% (1978)

90% (1962)

71% (1991)

48% (1973)

61% (1980)

55% (1967)

65% (1983)

40% (1951)

40% (1962)

78% (1972)

80% (1987)