63% (1959)

61% (1959)

63% (1964)

69% (1960)

64% (1964)

64% (1961)

61% (1961)

54% (1962)

45% (1961)

58% (1964)

40% (1963)

45% (1961)

53% (1967)

50% (1968)

50% (1957)

45% (1962)

0% (1958)

40% (1974)