79% (1955)

74% (1976)

75% (1978)

52% (1968)

70% (1975)

56% (1960)

79% (1972)

61% (1965)

57% (1973)

27% (2007)

53% (1949)

50% (1957)

50% (1956)

67% (1974)

50% (1949)

50% (1955)

50% (1955)

52% (2012)

50% (1954)

50% (1991)