52% (1987)

49% (1987)

47% (1992)

45% (1985)

57% (1990)

44% (1989)

48% (1986)

59% (1986)

51% (1988)

43% (1995)

44% (1990)

33% (1986)

37% (1991)

48% (1987)

50% (1986)

53% (1988)

49% (1990)

45% (1985)

54% (1989)

46% (1986)