59% (1967)

50% (1964)

48% (1970)

42% (1962)

52% (1968)

33% (1968)

58% (1965)

35% (1970)

59% (1962)

0% (1963)

0% (1970)

0% (1959)

35% (1967)

68% (1967)

37% (1967)

65% (1964)

50% (1963)

50% (1963)

32% (1964)

40% (1962)