77% (1968)

80% (1964)

77% (1961)

81% (1951)

80% (1947)

80% (1959)

78% (1941)

74% (1940)

78% (1971)

72% (1957)

83% (1953)

61% (1960)

76% (1946)

84% (1952)

78% (1965)

77% (1943)

75% (1949)

74% (1952)

66% (1940)

71% (1969)