61% (1971)

57% (1971)

76% (1985)

71% (1983)

65% (1981)

60% (1978)

80% (1975)

50% (1979)

57% (1972)

51% (1971)

48% (1970)

63% (1971)

52% (1973)

62% (1967)

53% (1971)

0% (1983)

57% (1982)

55% (1982)

50% (1972)

56% (1968)