34% (1979)

62% (1985)

60% (1987)

50% (1987)

46% (1986)

60% (1990)

0% (1988)

42% (1986)

60% (1987)

0% (1985)

0% (1989)

55% (1987)

50% (1987)

44% (1988)

62% (1979)

10% (1988)

53% (1983)

70% (1988)

42% (1988)

0% (1981)