67% (1981)

63% (1981)

70% (1979)

63% (1980)

50% (1984)

77% (1979)

51% (1990)

78% (1980)

73% (1982)

89% (1985)

48% (1981)

56% (1979)

41% (1984)

43% (1992)

66% (1980)

63% (1990)

100% (1983)

67% (1981)

0% (1977)

100% (1980)