34% (1979)

62% (1985)

62% (1979)

50% (1990)

50% (1987)

60% (1987)

41% (1987)

53% (1983)

0% (1981)

0% (1987)

40% (1985)

46% (1986)

50% (1987)

0% (1990)

42% (1986)

42% (1988)

0% (1988)

49% (1977)

10% (1981)

44% (1988)