67% (1971)

40% (1947)

63% (1959)

59% (1961)

64% (1950)

61% (1945)

80% (1951)

53% (1960)

76% (1972)

57% (1957)

63% (1948)

61% (1949)

59% (1973)

67% (1961)

58% (1953)

60% (1950)

61% (1951)

64% (1959)

66% (1950)

67% (1971)