50% (1988)

38% (1992)

53% (1993)

38% (1991)

58% (1991)

30% (1990)

37% (1987)

27% (1989)

68% (2017)

65% (1984)

35% (1988)

25% (1984)

33% (1992)

58% (1993)

45% (1984)

50% (1988)

57% (1992)