43% (1972)

70% (1979)

52% (1980)

51% (1978)

50% (1974)

64% (1980)

57% (1972)

50% (1975)

50% (1977)

60% (1982)

73% (1977)

74% (1968)

50% (1972)

72% (1973)

68% (1962)

52% (1975)

50% (1979)

64% (1969)

30% (1968)

0% (1971)