38% (1985)

48% (1984)

48% (1986)

54% (1986)

55% (1987)

35% (1986)

60% (1987)

52% (1985)

32% (1987)

59% (2021)

51% (1989)

45% (1983)

47% (1987)

35% (1985)

30% (1988)

51% (1989)

58% (1987)

51% (1988)

50% (1988)

42% (1989)