61% (1955)

62% (2002)

72% (1966)

63% (1987)

72% (1963)

69% (1973)

67% (1995)

60% (2005)

69% (1958)

64% (1988)

76% (2001)

66% (1945)

55% (1978)

63% (1966)

58% (1975)

65% (2003)

60% (1971)

72% (1926)

65% (1957)

55% (1956)