0% (2005)

48% (1957)

50% (1985)

52% (1970)

57% (1984)

47% (1961)

48% (1926)

52% (1956)

57% (1987)

60% (1970)

58% (1926)

57% (1991)

58% (1991)

68% (1971)

78% (1976)

74% (1962)

54% (1969)

50% (1950)

62% (1964)

35% (1985)