50% (1972)

63% (1980)

10% (1980)

10% (1971)

49% (1974)

44% (1973)

59% (1972)

56% (1977)

44% (1980)

23% (1973)

20% (1971)

37% (1971)

56% (1972)

25% (1977)

25% (1971)

0% (1974)

53% (1973)

25% (1975)

20% (1974)

25% (1972)