10% (1965)

78% (1987)

85% (1980)

80% (1968)

0% (1969)

100% (1973)

20% (1987)

70% (1971)

0% (1962)

0% (1968)

0% (1984)

0% (1967)

80% (1974)

50% (1987)

50% (1986)

70% (1969)

0% (1975)

77% (1979)

0% (1988)

70% (1984)