80% (1980)

41% (1977)

80% (1988)

0% (1981)

73% (1979)

67% (1979)

70% (1973)

90% (1990)

48% (1984)

90% (1982)

67% (1982)

47% (1988)

70% (1983)

50% (1981)

80% (1982)

28% (1977)

63% (1974)

56% (1976)

46% (1980)

86% (1979)