56% (1977)

40% (1985)

48% (1970)

61% (1990)

60% (1986)

50% (1976)

0% (1984)

60% (1969)

51% (1986)

60% (1976)

46% (1973)

0% (1987)

66% (1989)

0% (1966)

0% (1938)

0% (1967)

80% (1972)

47% (1986)

0% (1986)

0% (1980)