47% (1983)

57% (1988)

66% (1987)

37% (1987)

70% (1986)

43% (1988)

51% (1983)

50% (1988)

40% (1988)

80% (1974)

60% (1983)

60% (1983)

30% (1979)

0% (1984)

0% (1984)

46% (1996)

67% (1986)

0% (1985)