70% (1976)

80% (1985)

0% (1986)

60% (1959)

50% (1971)

0% (1974)

0% (1991)

0% (1985)

0% (1974)

0% (1957)

30% (1968)

0% (1966)

33% (1980)

40% (1965)

70% (1961)

0% (1987)

50% (1963)

50% (1973)

70% (1969)

41% (1979)