61% (1986)

74% (1987)

55% (1987)

65% (1987)

50% (1987)

39% (1987)

20% (1986)

44% (1987)

45% (1991)

31% (1987)

30% (1986)

60% (1986)

65% (1986)

40% (1987)

53% (1987)

45% (1987)