67% (2001)

40% (1993)

66% (1994)

57% (1994)

61% (1999)

34% (2000)

45% (2001)

17% (1999)

44% (1992)

38% (1998)

40% (1990)

68% (1990)

30% (1994)

0% (1998)

45% (1992)

52% (1993)

70% (1990)

58% (1996)

72% (1996)

60% (1996)