85% (1966)

80% (1965)

60% (1972)

51% (1979)

56% (1980)

0% (1957)

56% (1967)

51% (1973)

58% (1978)

56% (1979)

10% (1976)

80% (1969)

56% (1965)

20% (1976)

41% (1977)

15% (1981)

52% (1969)

47% (1980)

59% (1975)

52% (1975)