68% (1990)

53% (1988)

30% (1988)

32% (1987)

61% (1989)

61% (1988)

55% (1987)

53% (1990)

48% (1988)

48% (1987)

41% (1994)

58% (1990)

70% (1994)

76% (1984)

59% (1988)

42% (1988)

46% (1988)

52% (1987)

63% (1986)

72% (1986)