85% (1975)

62% (1982)

74% (1991)

80% (1972)

72% (1983)

65% (1977)

0% (1987)

84% (1967)

40% (1984)

45% (1985)

42% (1985)

50% (1986)

83% (1991)

90% (1969)

78% (1985)

20% (1985)

50% (1985)

0% (1975)

0% (1982)

53% (1985)