85% (1966)

80% (1965)

56% (1980)

45% (1980)

70% (1967)

58% (1978)

48% (1976)

46% (1970)

62% (1972)

55% (1966)

10% (1976)

52% (1977)

72% (1960)

15% (1981)

50% (1967)

53% (1975)

53% (1979)

52% (1969)

20% (1976)

52% (1978)