70% (1969)

68% (1969)

55% (1969)

51% (1966)

56% (1971)

64% (1973)

71% (1972)

51% (1955)

62% (1962)

59% (1974)

59% (1967)

33% (1971)

40% (1971)

62% (1958)

57% (1968)

54% (1971)

68% (1968)

58% (1971)

57% (1971)

50% (1951)