76% (1963)

62% (1976)

0% (1986)

0% (1984)

0% (1980)

56% (1964)

57% (1976)

0% (1987)

74% (1964)

44% (1987)

55% (1972)

65% (1972)

62% (1985)

33% (1966)

60% (1981)

35% (1987)

0% (1978)

62% (1978)

90% (1961)

43% (1970)