66% (1965)

70% (1959)

40% (1985)

56% (1959)

78% (1971)

69% (1979)

52% (1967)

40% (1966)

20% (1977)

74% (1957)

40% (1968)

50% (1981)

60% (1985)

30% (1975)

63% (1979)

70% (1962)

50% (1961)

53% (1979)

50% (1980)

85% (1981)