79% (1955)

74% (1976)

56% (1960)

52% (1968)

79% (1972)

57% (1973)

75% (1978)

70% (1975)

50% (1955)

50% (1949)

53% (1949)

67% (1950)

61% (1965)

50% (1947)

44% (1979)

27% (2007)

50% (1991)

50% (1956)

53% (1955)

52% (1953)