40% (1970)

39% (1965)

38% (1959)

42% (1959)

45% (1968)

56% (1971)

40% (1967)

33% (1964)

62% (1976)

35% (1968)

52% (1973)

63% (1962)

0% (1970)

50% (1960)

43% (1962)

42% (1963)

48% (1958)

45% (1958)

50% (1961)

53% (1970)