47% (1986)

48% (1987)

32% (1986)

44% (1989)

52% (1988)

57% (1990)

44% (1986)

37% (1991)

52% (1987)

59% (1986)

53% (1988)

43% (1990)

45% (1985)

46% (1992)

37% (1990)

48% (1987)

46% (1986)

23% (1997)

41% (1991)

50% (1986)