61% (2005)

56% (1997)

64% (2005)

77% (1998)

44% (1998)

0% (1988)

58% (1998)

67% (1998)

52% (1987)

60% (1986)

55% (1985)

57% (2000)

61% (1996)

0% (1987)

57% (1986)

0% (1988)

54% (1987)

27% (1998)

50% (1991)

67% (2001)