79% (1983)

52% (1976)

57% (1984)

48% (1985)

60% (1987)

53% (1984)

62% (1990)

88% (1987)

60% (1981)

40% (1984)

45% (1983)

63% (1988)

20% (1984)

0% (1978)

0% (1987)

39% (1977)

52% (1986)

90% (2006)

42% (1983)

50% (1989)