43% (1991)

40% (1990)

10% (1991)

48% (1995)

74% (2000)

72% (1997)

43% (1992)

10% (1993)

37% (1990)

20% (2000)

47% (2001)

75% (1994)

58% (1997)

29% (1998)

43% (2005)

0% (1995)

0% (1998)

27% (1988)

52% (1997)

54% (1993)