43% (1984)

72% (1971)

0% (1975)

60% (1983)

56% (1980)

39% (1981)

64% (1970)

70% (1991)

60% (1988)

80% (1975)

10% (1975)

0% (1957)

0% (1968)

33% (1991)

50% (1988)

40% (1987)

52% (1982)

62% (1982)

70% (1972)

45% (1981)