53% (1960)

55% (1972)

40% (1980)

55% (1955)

66% (1953)

50% (1950)

57% (1946)

50% (1951)

57% (1950)

53% (1956)

61% (1959)

44% (1953)

60% (1957)

56% (1975)

57% (1955)

62% (1964)

60% (1963)

49% (1953)

50% (1955)

46% (1954)