78% (1963)

67% (1971)

76% (1960)

80% (1960)

79% (1960)

54% (1962)

56% (1962)

48% (1982)

51% (1961)

52% (1960)

63% (1953)

63% (1960)

73% (1955)

64% (1957)

62% (1963)

60% (1962)

70% (1953)

69% (1955)

70% (1959)

42% (1964)