0% (1971)

70% (1980)

50% (1949)

63% (1966)

0% (1974)

0% (1976)

70% (1979)

63% (1969)

0% (1951)

0% (1984)

50% (1975)

0% (1987)

0% (1990)

65% (1976)

68% (1968)

75% (1973)

10% (1973)

51% (1986)

55% (1977)

0% (1966)