64% (1982)

47% (1983)

40% (1957)

62% (1967)

77% (1950)

45% (1964)

43% (1957)

47% (1963)

50% (1984)

63% (1961)

48% (1970)

50% (1962)

65% (1951)

48% (1971)

51% (1965)

55% (1974)

51% (1979)

46% (1962)

61% (1956)

68% (1958)