52% (1936)

44% (1936)

64% (1967)

68% (2001)

56% (2002)

59% (1994)

62% (2000)

54% (1974)

56% (1969)

50% (1958)

56% (1937)

54% (1959)

44% (1963)

48% (1997)

64% (1961)

52% (1922)

66% (1963)

63% (1978)

68% (1955)

66% (1965)