68% (1990)

45% (1990)

55% (1994)

39% (1991)

38% (1992)

63% (1990)

52% (1990)

42% (1990)

57% (1989)

47% (1992)

46% (1992)

42% (1993)

30% (1993)

60% (1993)

22% (1992)

51% (1991)

42% (1991)

39% (1992)

90% (1990)

100% (1992)