46% (1988)

54% (1988)

51% (1984)

42% (1987)

63% (1987)

47% (1991)

40% (1988)

41% (1986)

70% (1986)

54% (1987)

43% (1987)

53% (1988)

62% (1983)

46% (1987)

55% (1984)

30% (1987)

53% (1987)

37% (1987)

47% (1986)

30% (1986)