80% (1968)

0% (1987)

0% (1972)

40% (1986)

58% (1961)

41% (1981)

10% (1988)

57% (1984)

50% (1980)

50% (1975)

80% (1987)

39% (1986)

0% (1984)

0% (1957)

43% (1956)

10% (1988)

54% (1971)

55% (1960)

0% (1948)

0% (1958)