47% (1983)

45% (1985)

44% (1984)

75% (1981)

76% (1986)

70% (1983)

31% (1985)

71% (1986)

46% (1985)

52% (2011)

58% (1958)

75% (1974)

72% (1979)

50% (1962)

69% (1985)

70% (1978)

62% (1976)

73% (1981)

35% (2001)

0% (2006)