45% (1990)

70% (1962)

69% (1979)

69% (1963)

53% (1985)

67% (1969)

66% (1964)

60% (1971)

64% (1968)

27% (1971)

62% (1965)

50% (1988)

58% (1983)

65% (1984)

53% (1976)

69% (1965)

50% (1984)

68% (1971)

49% (1987)

56% (1966)