46% (1955)

50% (1956)

50% (1958)

50% (1955)

53% (1958)

53% (1968)

50% (1970)

50% (1956)

50% (1965)

58% (1953)

50% (1963)

40% (1966)

50% (1964)

52% (1962)

53% (1959)

50% (1968)