43% (1999)

33% (1995)

32% (1993)

58% (1994)

48% (1999)

66% (1997)

59% (1992)

68% (1997)

60% (1993)

50% (2000)

50% (2000)

37% (1998)

52% (1995)

52% (1997)

56% (1998)

48% (1991)

57% (1998)

45% (1995)

44% (1997)

74% (1994)