66% (1981)

64% (1981)

70% (1979)

63% (1981)

51% (1990)

63% (1980)

77% (1979)

78% (1980)

50% (1984)

54% (1979)

66% (1981)

67% (1980)

62% (1990)

73% (1982)

0% (1980)

76% (1980)

85% (1988)

0% (1984)

89% (1985)

0% (1981)