62% (1966)

59% (1956)

63% (1966)

63% (1972)

64% (1965)

58% (1966)

68% (1967)

60% (1967)

58% (1974)

42% (1970)

55% (1970)

50% (1982)

48% (1985)

43% (1974)

0% (1969)

0% (1963)

50% (1966)

20% (1972)

35% (1975)

52% (1976)