67% (1964)

56% (1966)

56% (2003)

64% (1955)

69% (1964)

70% (1951)

67% (1944)

59% (2002)

60% (2001)

74% (1939)

52% (1991)

59% (1969)

68% (1952)

64% (1951)

52% (1985)

59% (1959)

65% (1965)

67% (1948)

44% (1989)

68% (1950)