73% (1982)

66% (1975)

70% (1971)

73% (1935)

67% (1984)

70% (1967)

68% (1963)

55% (2002)

52% (1985)

44% (1972)

70% (1951)

71% (1952)

52% (1994)

64% (1953)

58% (1979)

69% (1985)

63% (1970)

73% (1925)

46% (1993)

79% (1982)