76% (1997)

64% (1995)

51% (1995)

0% (1995)

45% (1994)

59% (1996)

10% (1997)

69% (1993)

37% (1996)

58% (1994)

51% (1993)

75% (1995)

66% (1995)

57% (1995)

56% (1994)

32% (1994)

20% (1994)

0% (1995)

72% (1998)

0% (1994)