40% (1965)

45% (1966)

55% (1969)

58% (1983)

32% (1981)

49% (1981)

67% (1962)

50% (1958)

60% (1975)

49% (1974)

66% (1967)

20% (1976)

47% (1959)

59% (1959)

65% (1969)

65% (1959)

56% (1969)

33% (1980)

58% (1963)

56% (1966)