69% (1986)

62% (1986)

55% (1985)

73% (1983)

63% (1986)

47% (1985)

65% (1983)

66% (1984)

49% (1985)

67% (1985)

80% (1985)

57% (1985)

50% (1984)

45% (1984)

46% (1983)

0% (1983)