63% (1963)

48% (1969)

57% (1969)

52% (1958)

50% (1980)

50% (1962)

55% (1950)

62% (1949)

70% (1962)

45% (1972)

57% (1965)

53% (1979)

50% (1984)

53% (1979)

60% (1955)

52% (1957)

59% (1981)

50% (1970)

55% (1957)

50% (1964)