73% (1986)

69% (1959)

56% (1977)

66% (1987)

29% (1958)

55% (1969)

56% (1973)

56% (1968)

60% (1969)

0% (1969)

72% (1981)

63% (1989)

67% (1984)

69% (1986)

61% (1974)

41% (1979)

43% (1969)

65% (1972)

45% (1953)

68% (1976)