33% (1969)

53% (1961)

53% (1966)

68% (1962)

52% (1951)

51% (1970)

60% (1973)

80% (1955)

70% (1966)

52% (1961)

53% (1965)

55% (1971)

45% (1981)

70% (1971)

53% (1963)

50% (1954)

57% (1970)

48% (1966)

80% (1963)

50% (1967)