61% (2007)

70% (1965)

70% (1964)

75% (2012)

61% (1981)

78% (1939)

64% (1970)

57% (1990)

60% (1940)

62% (1968)

56% (1995)

62% (1930)

63% (1997)

54% (1968)

62% (1937)

69% (1943)

58% (1969)

51% (1983)

62% (1984)

63% (1965)