52% (1969)

58% (1983)

56% (1966)

49% (1981)

66% (1967)

32% (1980)

56% (1969)

32% (1981)

40% (1974)

51% (1966)

50% (1974)

64% (1959)

57% (1974)

58% (1963)

0% (1966)

70% (1955)

40% (1965)

67% (1962)

55% (1965)

45% (1981)