50% (1973)

50% (1988)

50% (1980)

50% (1963)

0% (1986)

57% (1974)

60% (1968)

0% (1964)

0% (1985)

40% (1958)

60% (1968)

0% (1988)

50% (1977)

0% (1988)

0% (1976)

72% (1983)

0% (1966)

0% (1967)

35% (1980)

50% (1962)