56% (1996)

68% (1992)

73% (1994)

36% (1995)

72% (1996)

62% (1996)

53% (1999)

43% (1999)

52% (1992)

49% (1994)

40% (1998)

49% (1998)

40% (1994)

30% (1999)

40% (1993)

29% (1996)

56% (1999)

45% (1995)

46% (1996)

67% (1999)