40% (1979)

63% (1981)

0% (1964)

60% (1970)

54% (1977)

0% (1987)

0% (1975)

0% (1964)

0% (1986)

0% (1971)

0% (1968)

0% (1988)

80% (1976)

0% (1989)

0% (1987)

0% (1961)

0% (1969)

0% (1979)

10% (1988)

50% (1988)