66% (1963)

56% (1992)

58% (1939)

69% (1954)

59% (1980)

62% (1998)

72% (1962)

58% (1980)

61% (1971)

60% (1943)

74% (1982)

48% (2002)

63% (1966)

62% (1957)

53% (1986)

28% (2004)

58% (1968)

67% (1952)

58% (1978)

74% (2004)