Value of $100 in 1920, adjusted to 1938

What happened to prices between 1920 and 1938

Between 1920 and 1938, the Consumer Price Index went from 20 to 14.1. Cumulatively, prices declined 29.5%, which works out to an average of -1.92% per year. Put differently, a dollar in 1920 bought what $1.42 buys in 1938.

1920 was the last year of the inflation that had built since the war began: consumer prices rose 15.6% for the year, leaving the CPI more than double its 1913 starting level after seven straight years of increases. The boom behind those increases turned to bust before the year was over. The Federal Reserve, worried about speculation, pushed its discount rate to a record 7% that spring, and wholesale prices, which had led the wartime runup, began collapsing within months. The National Bureau of Economic Research dates the resulting downturn from January 1920 to July 1921, one of the shortest but steepest contractions in U.S. history, and consumer prices followed into outright decline, falling 10.5% in 1921. Two constitutional changes reshaped the country that year, too. The 18th Amendment’s ban on alcohol took legal effect January 17, enforced under the Volstead Act Congress had passed the previous October. Then, on August 18, Tennessee’s ratification of the 19th Amendment secured women’s right to vote nationwide, and women cast ballots in a presidential election for the first time that November, when Warren Harding won on a promise to return the country to “normalcy” after a decade of war, pandemic, and rising prices. First-class postage held at 2 cents, unchanged since mid-1919.

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The destination year: 1938

Consumer prices fell 2.1% in 1938, reversing most of 1937’s gain and interrupting four straight years of recovery from the Depression’s trough. The National Bureau of Economic Research dates the bottom of the downturn, which had begun that May, to June 1938, a sharp 13-month contraction that briefly pushed unemployment back up near 19%. Even in a year the economy was shrinking again, Congress passed one of the New Deal’s most lasting reforms. The Fair Labor Standards Act, signed June 25 and effective that October, established the first federal minimum wage, 25 cents an hour, capped the standard workweek at 44 hours with time-and-a-half overtime beyond it, and restricted the employment of children in most industries. The wage floor and hours limits applied only to workers engaged in interstate commerce at first, but they set a precedent that would expand in the decades that followed. Consumer prices stood 42.4% above their 1913 level and 17.5% below their 1929 peak, evidence of how far the recovery still had to go even eight years after the Depression began. First-class postage held at 3 cents.

More about inflation in 1938 →