53% (1998)

64% (1998)

40% (1996)

37% (1996)

45% (1996)

42% (1995)

20% (1999)

40% (1999)

39% (1997)

72% (1997)

32% (1996)

38% (1998)

50% (1999)

47% (1998)

35% (1997)

40% (1998)

58% (1998)

60% (1999)

15% (1995)

37% (1996)