55% (1989)

63% (1990)

69% (1990)

45% (1990)

55% (1994)

39% (1991)

52% (1991)

90% (1990)

40% (1994)

42% (1993)

42% (1990)

46% (1992)

41% (1991)

48% (1990)

40% (1992)

54% (1984)

52% (1992)

30% (1993)

48% (1989)

49% (1992)