77% (1976)

53% (1962)

50% (1967)

81% (1967)

57% (1974)

40% (1975)

55% (1968)

63% (1966)

64% (1974)

52% (1968)

40% (1974)

36% (1963)

50% (1984)

53% (1965)

79% (1973)

63% (1966)

59% (1977)

50% (1975)

45% (1962)

44% (1983)