52% (1958)

57% (1969)

50% (1970)

45% (1972)

48% (1969)

60% (1955)

55% (1950)

72% (1961)

60% (1966)

62% (1949)

50% (1984)

50% (1962)

50% (1962)

55% (1955)

53% (1979)

57% (1965)

50% (1971)

50% (1980)

54% (1955)

50% (1949)