83% (1980)

66% (1970)

71% (1976)

62% (1985)

0% (1980)

77% (1983)

80% (1984)

80% (1977)

74% (1984)

0% (1981)

88% (1982)

70% (1983)

68% (1983)

82% (1975)

82% (1975)

45% (1979)

100% (1978)

10% (1984)

70% (1988)

81% (1974)