85% (1978)

50% (1976)

59% (1975)

80% (1979)

0% (1987)

64% (1978)

60% (1983)

77% (1975)

30% (1988)

57% (1973)

79% (1977)

40% (1973)

0% (1978)

76% (1978)

0% (1985)

35% (1979)

0% (1978)

0% (1977)

30% (1976)

0% (1973)