31% (1979)

0% (1975)

32% (1984)

51% (1977)

10% (1985)

38% (1982)

63% (1982)

60% (1953)

0% (1971)

0% (1975)

48% (1970)

65% (1985)

0% (1980)

80% (1972)

60% (1964)

70% (1973)

43% (1982)

0% (1988)

0% (1991)

10% (1973)