76% (1962)

65% (1961)

83% (1975)

90% (1962)

80% (1969)

35% (1968)

71% (1971)

58% (1991)

33% (1974)

80% (1980)

78% (1973)

90% (1988)

47% (1988)

50% (1987)

90% (1986)

77% (1977)

70% (1974)

0% (1975)

61% (1974)

0% (1975)