46% (1978)

39% (1970)

100% (1981)

58% (1987)

50% (1981)

30% (1963)

43% (1986)

55% (1984)

39% (1972)

53% (1973)

66% (1971)

55% (1981)

39% (1975)

10% (1989)

30% (1987)

24% (1963)

48% (1975)

27% (1964)

32% (1985)

46% (1967)