77% (1955)

66% (1963)

50% (1959)

69% (1960)

62% (1958)

34% (1949)

53% (1957)

62% (1954)

62% (1962)

42% (1962)

43% (1957)

71% (1958)

58% (1958)

42% (1960)

50% (1955)

0% (1951)

47% (1966)

60% (1966)

70% (1967)

66% (1967)