50% (1992)

51% (1968)

50% (1984)

45% (1967)

44% (1965)

64% (1974)

52% (1966)

50% (1965)

37% (1963)

40% (1983)

64% (1974)

53% (1963)

50% (1983)

50% (1963)

38% (1966)

50% (1983)

67% (1970)

49% (1976)

40% (1975)

62% (1964)