73% (2009)

62% (1983)

52% (1981)

67% (2009)

66% (2020)

76% (1959)

61% (2009)

56% (2006)

45% (1984)

62% (2017)

66% (1985)

69% (1977)

67% (2009)

73% (1978)

62% (1981)

58% (1979)

68% (1977)

38% (1978)

44% (1994)

20% (2004)