66% (1964)

56% (1959)

61% (1959)

40% (1963)

40% (1962)

65% (1962)

61% (1962)

43% (1961)

50% (1961)

65% (1961)

53% (1959)

30% (1962)

0% (1959)

25% (1960)

40% (1959)

46% (1960)

35% (1961)

50% (1960)

60% (1962)

30% (1960)