85% (1975)

62% (1982)

65% (1977)

45% (1985)

42% (1985)

72% (1983)

84% (1967)

40% (1984)

0% (1987)

80% (1972)

90% (1990)

0% (1982)

90% (1969)

50% (1986)

30% (1992)

0% (1958)

0% (1982)

60% (1978)

35% (1978)

72% (1974)