76% (1997)

54% (1995)

45% (1994)

60% (1996)

72% (1998)

58% (1995)

40% (1996)

52% (1994)

56% (1994)

75% (1995)

40% (1994)

51% (1993)

43% (1994)

32% (1994)

64% (1995)

0% (1995)

0% (1994)

70% (1994)

39% (1996)

66% (1995)