76% (1979)

63% (2003)

63% (1955)

75% (1962)

78% (1960)

46% (1993)

69% (1949)

59% (1983)

71% (1936)

62% (1966)

62% (1969)

52% (1982)

70% (1967)

76% (1957)

66% (1983)

61% (1973)

61% (1954)

72% (1964)

74% (1948)

77% (1979)