76% (1988)

63% (1989)

62% (1988)

68% (1988)

69% (1987)

62% (1987)

70% (1987)

74% (1987)

64% (1989)

64% (1988)

69% (1988)

54% (1987)

63% (1988)

66% (1988)

54% (1988)

50% (1988)

53% (1988)

61% (1989)

66% (1987)