60% (1983)

49% (1992)

70% (1991)

52% (1985)

50% (1986)

58% (1978)

53% (1987)

69% (1982)

50% (1992)

49% (1977)

58% (1984)

10% (1979)

45% (1989)

90% (1993)

55% (1962)

48% (1988)

68% (1986)

35% (2017)