68% (2014)

76% (1960)

69% (1973)

74% (1973)

63% (1980)

70% (1973)

66% (1963)

35% (1966)

74% (1965)

70% (1983)

60% (1979)

70% (1964)

60% (1962)

70% (1970)

56% (1968)

64% (1970)

63% (1965)

50% (1997)

52% (1973)

60% (1985)