76% (1997)

58% (1994)

56% (1994)

43% (1994)

50% (1996)

51% (1993)

69% (1993)

64% (1995)

30% (1994)

0% (1994)

32% (1994)

57% (1995)

37% (1996)

45% (1994)

80% (1995)

72% (1998)

39% (1996)

0% (1996)

0% (1995)

0% (1993)