30% (1981)

0% (1961)

64% (1966)

56% (1965)

50% (1969)

63% (1967)

62% (1960)

55% (1959)

40% (1959)

63% (1970)

45% (1978)

41% (1964)

70% (1955)

62% (1960)

55% (1962)

66% (1962)

65% (1967)

48% (1980)

69% (1961)

48% (1964)