52% (1989)

51% (1988)

38% (1992)

63% (1988)

65% (1988)

20% (1989)

33% (1987)

64% (1988)

0% (1991)

46% (1986)

38% (1987)

70% (1987)

40% (1990)

40% (1990)

54% (1991)

38% (1988)

57% (1989)

66% (1988)

53% (1987)

69% (1990)