70% (1972)

77% (1957)

77% (1979)

71% (1976)

83% (1980)

77% (1983)

0% (1980)

0% (1988)

80% (1987)

76% (1987)

68% (1983)

69% (1978)

50% (1984)

0% (1984)

68% (1971)

0% (1986)

0% (1983)

82% (1975)

70% (1983)

0% (1978)