55% (1969)

49% (1981)

65% (1969)

64% (1959)

50% (1974)

67% (1967)

56% (1966)

58% (1983)

32% (1980)

51% (1966)

47% (1959)

56% (1969)

58% (1963)

62% (1981)

50% (1958)

32% (1981)

40% (1965)

45% (1981)

57% (1974)

70% (1955)