78% (1979)

70% (1972)

79% (1957)

72% (1976)

75% (1979)

0% (1986)

69% (1978)

87% (1971)

83% (1980)

80% (1972)

0% (1988)

0% (1986)

70% (1978)

85% (1983)

45% (1988)

70% (1968)

60% (1976)

10% (1984)

75% (1977)

0% (1992)