70% (1986)

69% (1967)

62% (1969)

66% (1976)

57% (1972)

62% (1968)

63% (1970)

66% (1972)

50% (1966)

80% (1965)

57% (1966)

55% (1965)

60% (1967)

70% (1970)

60% (1964)

25% (1963)

46% (1967)

63% (1973)

49% (1974)

65% (1968)