20% (1978)

58% (1963)

49% (1985)

50% (1964)

50% (1970)

49% (1971)

0% (1986)

63% (1986)

53% (1984)

51% (1969)

60% (1969)

0% (1976)

0% (1971)

0% (1969)

0% (1987)

50% (1968)

50% (1967)

66% (1975)

63% (1966)

0% (1949)