55% (1957)

45% (1977)

51% (1958)

50% (1974)

75% (1963)

51% (1974)

65% (1972)

40% (1972)

70% (1958)

50% (1970)

0% (1967)

50% (1958)

0% (1976)

45% (1955)

60% (1973)

60% (1979)

57% (1960)

57% (1967)

35% (1971)

0% (1962)