65% (1961)

83% (1967)

66% (1954)

53% (1964)

66% (1969)

52% (1971)

70% (1966)

77% (1965)

75% (1955)

50% (1949)

47% (1967)

70% (1952)

59% (1958)

70% (1962)

57% (1970)

64% (1958)

69% (1966)

80% (1965)

59% (1977)

58% (1952)