83% (1980)

80% (1980)

78% (1973)

77% (1985)

64% (1980)

63% (1990)

90% (1986)

80% (1984)

82% (1985)

80% (1983)

35% (1968)

64% (1983)

77% (1990)

84% (1979)

70% (1978)

73% (1969)

80% (1982)

63% (1977)

60% (1984)

67% (1982)