52% (1964)

60% (1975)

53% (1966)

40% (1963)

58% (1956)

33% (1965)

42% (1973)

48% (1967)

50% (1959)

70% (1965)

0% (1969)

0% (1962)

18% (1967)

0% (1967)

10% (1969)

50% (1959)

63% (1972)

20% (1956)

20% (1969)

70% (1973)