55% (1969)

67% (1967)

49% (1981)

64% (1959)

70% (1955)

50% (1974)

40% (1974)

65% (1969)

58% (1983)

56% (1969)

55% (1965)

32% (1981)

45% (1981)

45% (1966)

56% (1966)

57% (1974)

62% (1981)

47% (1959)

0% (1966)

51% (1966)