40% (1988)

47% (1988)

60% (1985)

51% (1984)

47% (1991)

30% (1986)

62% (1983)

62% (1987)

60% (1987)

52% (1987)

40% (1985)

55% (1987)

0% (1988)

45% (1988)

41% (1986)

0% (1988)

47% (1986)

50% (1979)

42% (1987)

42% (1986)