77% (1963)

80% (1960)

76% (1960)

76% (1961)

73% (1955)

69% (1959)

78% (1960)

67% (1971)

59% (1959)

54% (1962)

72% (1959)

56% (1962)

48% (1982)

71% (1986)

70% (1976)

70% (1953)

64% (1957)

69% (1955)

69% (1959)

72% (1961)