76% (1997)

58% (1994)

45% (1994)

57% (1995)

64% (1995)

30% (1994)

51% (1993)

56% (1994)

32% (1994)

0% (1995)

66% (1995)

52% (1994)

63% (1994)

20% (1994)

50% (1996)

59% (1996)

39% (1996)

70% (1994)

0% (1993)

37% (1996)