66% (1981)

64% (1981)

78% (1980)

77% (1979)

51% (1990)

50% (1984)

71% (1979)

63% (1981)

63% (1980)

73% (1982)

48% (1981)

54% (1979)

56% (1979)

66% (1981)

62% (1990)

41% (1984)

76% (1980)

67% (1980)

52% (1981)

69% (1991)