59% (1960)

53% (1954)

53% (1956)

40% (1959)

40% (1961)

50% (1960)

62% (1960)

55% (1961)

50% (1958)

0% (1959)

54% (1950)

54% (1955)

0% (1961)

50% (1961)

42% (1957)

50% (1952)

40% (1958)

0% (1954)

52% (1960)

50% (1957)