62% (1960)

50% (1957)

56% (1957)

53% (1962)

40% (1961)

60% (1960)

52% (1957)

51% (1960)

58% (1964)

56% (1965)

55% (1958)

54% (1959)

50% (1959)

54% (1965)

50% (1964)

64% (1967)

59% (1965)

50% (1957)

61% (1964)

50% (1962)