57% (1972)

63% (1976)

48% (1973)

63% (1974)

66% (1975)

0% (1980)

66% (1980)

0% (1973)

60% (1975)

43% (1978)

80% (1978)

60% (1975)

63% (1972)

100% (1986)

37% (1979)

55% (1974)

50% (1973)

0% (1974)

60% (1976)

80% (1976)