42% (1987)

49% (1982)

75% (1987)

30% (1980)

44% (1971)

45% (1987)

56% (1976)

40% (1982)

55% (1976)

25% (1976)

37% (1968)

10% (1968)

50% (1987)

41% (1987)

0% (1969)

0% (1988)

0% (1985)

52% (1967)

50% (1980)

0% (1970)