46% (1989)

53% (1977)

70% (1983)

50% (1971)

50% (1980)

58% (1962)

57% (1973)

62% (1975)

79% (1974)

0% (1980)

40% (1962)

44% (1988)

0% (1961)

65% (1971)

0% (1975)