53% (1979)

48% (1973)

60% (1966)

53% (1951)

57% (1969)

50% (1973)

53% (1979)

38% (1982)

45% (1972)

52% (1958)

50% (1949)

60% (1955)

57% (1965)

70% (1962)

52% (1956)

50% (1984)

50% (1957)

55% (1957)

50% (1962)

60% (1981)