37% (1979)

63% (1974)

57% (1972)

63% (1974)

63% (1972)

80% (1976)

70% (1973)

43% (1978)

0% (1980)

80% (1980)

48% (1973)

66% (1980)

60% (1975)

60% (1975)

0% (1977)

50% (1973)

0% (1974)

70% (1984)

0% (1973)

66% (1975)