52% (1958)

50% (1956)

45% (1953)

42% (1986)

45% (1956)

50% (1962)

52% (1964)

50% (1962)

40% (1990)

51% (1979)

42% (1980)

55% (1948)

61% (1956)

45% (1958)

50% (1946)

42% (1988)

50% (1990)

60% (1951)

42% (1951)

54% (1956)