64% (1981)

58% (1968)

74% (1976)

69% (1974)

59% (1966)

72% (1965)

0% (1985)

0% (1967)

68% (1982)

77% (1974)

71% (1979)

82% (1979)

63% (1986)

62% (1951)

59% (1985)

65% (1984)

57% (1967)

0% (1968)

80% (1964)

70% (1987)