65% (1974)

43% (1953)

78% (1975)

68% (1969)

55% (1976)

64% (1965)

79% (1952)

77% (1952)

73% (1965)

68% (1976)

79% (1975)

76% (1953)

67% (1971)

74% (1969)

72% (1950)

73% (1970)

66% (1955)

70% (1973)

56% (1957)

71% (1973)