74% (1969)

68% (1969)

60% (1967)

57% (1968)

58% (1965)

62% (1962)

62% (1964)

47% (1976)

50% (1970)

64% (1964)

50% (1968)

60% (1964)

60% (1962)

43% (1963)

28% (1979)

54% (1969)

57% (1956)

40% (1963)

70% (1955)

50% (1965)