65% (1986)

55% (1981)

20% (1980)

70% (1984)

64% (1981)

62% (1982)

50% (1971)

32% (1977)

25% (1968)

62% (1972)

52% (1982)

43% (1978)

50% (1980)

10% (1971)

42% (1982)

42% (1967)

50% (1970)

0% (1963)

67% (1985)