57% (1996)

73% (1994)

68% (1992)

40% (1995)

43% (1995)

52% (1992)

30% (1999)

53% (1999)

54% (1996)

35% (1999)

50% (2001)

49% (1998)

67% (1999)

62% (1996)

40% (1993)

56% (1999)

40% (1994)

27% (1996)

38% (1997)

75% (1994)