60% (1968)

50% (1973)

0% (1964)

0% (1972)

0% (1977)

45% (1946)

40% (1986)

40% (1990)

50% (1972)

40% (1938)

0% (1984)

0% (1981)

40% (1944)

65% (1980)

68% (1992)

20% (1971)

0% (1975)

35% (1950)

60% (1937)

30% (1976)