77% (1955)

71% (1958)

77% (1957)

69% (1960)

43% (1957)

50% (1959)

50% (1955)

66% (1963)

55% (1957)

62% (1958)

66% (1967)

60% (1966)

0% (1951)

47% (1966)

60% (1962)

47% (1959)

45% (1951)

62% (1962)

57% (1952)

70% (1967)