35% (1976)

55% (1969)

64% (1970)

63% (1952)

40% (1971)

50% (1958)

37% (1953)

74% (1961)

70% (1951)

70% (1956)

0% (1958)

50% (1954)

67% (1962)

40% (1979)

25% (1956)

0% (1960)

50% (1952)

40% (1956)

50% (1955)

40% (1959)