41% (1981)

61% (1969)

62% (1966)

54% (1953)

71% (1962)

47% (1990)

63% (1981)

45% (1979)

77% (1965)

30% (1986)

62% (1973)

69% (1966)

55% (1971)

60% (1976)

72% (1954)

68% (1938)

47% (1990)

37% (1980)

37% (1949)

57% (1938)