96% (1966)

73% (1979)

80% (1980)

41% (1977)

65% (1976)

50% (1981)

67% (1979)

63% (1974)

90% (1982)

68% (1975)

56% (1976)

46% (1980)

0% (1975)

58% (1980)

48% (1984)

70% (1983)

80% (1986)

80% (1967)

80% (1982)

90% (1983)