69% (1986)

55% (1985)

73% (1983)

62% (1986)

63% (1986)

65% (1983)

47% (1985)

66% (1984)

49% (1985)

46% (1983)

57% (1985)

67% (1985)

45% (1984)

0% (1983)

50% (1984)

80% (1985)