56% (1960)

52% (1970)

41% (1964)

42% (1997)

80% (1976)

62% (1968)

0% (1961)

70% (1961)

37% (1959)

40% (1961)

60% (1962)

75% (1959)

27% (1961)

0% (1961)

0% (1959)

40% (1959)

50% (1979)

44% (1958)

50% (1959)

59% (1963)