61% (1965)

46% (1971)

53% (1968)

35% (1972)

61% (1962)

37% (1975)

38% (1971)

60% (1974)

10% (1957)

20% (1981)

50% (1969)

35% (1966)

57% (1964)

63% (1929)

10% (1970)

66% (1963)

50% (1970)

50% (1973)

49% (1973)

46% (1964)