57% (1972)

63% (1976)

37% (1979)

0% (1980)

60% (1975)

100% (1986)

43% (1978)

55% (1974)

63% (1974)

66% (1980)

80% (1976)

63% (1972)

48% (1973)

0% (1973)

70% (1973)

80% (1980)

0% (1973)

66% (1975)

50% (1973)

60% (1985)