63% (2002)

54% (1988)

56% (1998)

52% (1984)

69% (1989)

62% (1987)

0% (1970)

59% (1985)

68% (1998)

60% (1987)

42% (1986)

0% (1970)

63% (1986)

0% (1970)

41% (1985)

0% (1970)

43% (1999)

0% (1970)

40% (1984)

0% (1970)