34% (1992)

51% (1988)

68% (2017)

58% (1993)

65% (1984)

58% (1991)

50% (1993)

45% (1984)

33% (1990)

34% (1991)

30% (1989)

20% (1984)

33% (1987)

30% (1988)

57% (1992)

33% (1992)

35% (1988)

0% (1970)