57% (1971)

0% (1973)

53% (1974)

43% (1970)

0% (1972)

40% (1972)

0% (1974)

0% (1971)

70% (1972)

80% (1971)

70% (1981)

63% (1974)

54% (1974)

20% (1973)

70% (1972)

50% (1984)

70% (1973)

0% (1974)

0% (1968)

0% (1973)