73% (1970)

55% (1962)

56% (1965)

57% (1964)

57% (1963)

54% (1965)

58% (1966)

52% (1966)

40% (1966)

52% (1963)

0% (1961)

52% (1964)

52% (1962)

20% (1965)

100% (1961)

62% (1959)

56% (1964)

0% (1966)

56% (1964)