59% (1986)

0% (1971)

59% (1988)

42% (1976)

53% (1973)

22% (1988)

52% (1984)

58% (1985)

43% (1968)

84% (1984)

26% (1989)

52% (1985)

42% (1983)

0% (1989)

48% (1987)

49% (1985)

23% (1986)

40% (1987)

62% (1986)

35% (1979)