79% (1955)

72% (1975)

46% (2012)

61% (1965)

56% (1960)

56% (1948)

81% (1972)

56% (1970)

27% (2007)

75% (1976)

50% (1954)

50% (1949)

53% (1949)

50% (1947)

75% (1978)

57% (1973)

50% (1956)

50% (1955)

67% (1950)

52% (1968)