median income in 1930, median income in 1920, median income in 1940, median income in 1950, median income in 1960, median income in 1933, median income in 1935, median income in 1970, median income in 1980, average median income in 1930, median household income in 1930
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median income in 1930
median income in 1920
median income in 1940
median income in 1950
median income in 1960
median income in 1933
median income in 1935
median income in 1970
median income in 1980
average median income in 1930
median household income in 1930
median income in 1930, median income in 1920, median income in 1940, median income in 1950, median income in 1960, median income in 1933, median income in 1935, median income in 1970, median income in 1980, average median income in 1930, median household income in 1930
