43% (1958)

59% (1968)

57% (1986)

52% (1956)

50% (1985)

70% (1967)

50% (1967)

0% (1971)

50% (1948)

58% (1981)

36% (1974)

60% (1973)

50% (1960)

57% (1947)

50% (1955)

58% (1982)

48% (1983)

63% (1981)

70% (1972)

70% (1965)