40% (1995)

100% (1994)

68% (1992)

43% (1995)

56% (1996)

52% (1992)

54% (1996)

49% (1994)

67% (1999)

62% (1996)

60% (1995)

40% (1994)

73% (1994)

53% (1999)

33% (1998)

35% (1999)

40% (1995)

27% (1996)

38% (1997)

42% (1995)