45% (1984)

62% (1984)

77% (1985)

81% (1981)

70% (1978)

63% (1985)

0% (1979)

76% (1977)

63% (1977)

67% (1988)

73% (1982)

100% (1987)

57% (1979)

67% (1980)

64% (1987)

67% (1976)

70% (1980)

63% (1973)

57% (1983)

63% (1978)