69% (1990)

45% (1990)

55% (1994)

41% (1990)

62% (1990)

52% (1990)

57% (1989)

48% (1989)

42% (1991)

34% (1991)

90% (1990)

22% (1992)

59% (1993)

51% (1984)

55% (1993)

45% (1992)

39% (1992)

51% (1991)

41% (1993)

47% (1992)