Value of $100 in 1919, adjusted to 1940

What happened to prices between 1919 and 1940

Between 1919 and 1940, the Consumer Price Index went from 17.3 to 14. Cumulatively, prices declined 19.1%, which works out to an average of -1.00% per year. Put differently, a dollar in 1919 bought what $1.24 buys in 1940.

The fighting in Europe ended in November 1918, but American prices kept climbing through 1919 almost as fast as they had during the war itself, rising 14.6% for the year. Wartime price and production controls were being dismantled, millions of soldiers were returning to the civilian labor market, and demand that had been held back for years ran into supply that had not caught up, a combination that kept the cost of living rising even with the guns silent. Workers, whose pay had fallen behind three straight years of double-digit inflation, pushed back: a general strike shut down Seattle in February, Boston’s police force walked out in September, and a nationwide steel strike that same month drew in roughly 350,000 workers and ran into the following January. One price did fall that year: first-class postage reverted to 2 cents on July 1, ending the wartime 3-cent rate that had funded part of the war effort since late 1917. By year’s end, prices had risen close to 75% since the CPI’s 1913 starting point, compressing more than a decade of typical peacetime inflation into six years of war and its aftermath.

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The destination year: 1940

Consumer prices rose 0.7% in 1940, snapping 1939’s decline and marking the first increase since 1937. The gain was modest, and the CPI still stood 18.1% below its 1929 peak, a reminder of how far the recovery from the Depression’s trough had left to go even as defense orders from Britain and France began reaching American factories. War was already reshaping domestic policy well before it touched American soil. Congress passed the Selective Training and Service Act that September, the country’s first peacetime draft, requiring men aged 21 to 35 to register and authorizing the induction of up to 900,000 men a year, more than a year before Pearl Harbor. That November, Franklin Roosevelt won an unprecedented third term, defeating Republican Wendell Willkie after campaigning on keeping the United States out of the war then consuming Europe and Asia. The promise would not hold much longer: within two years, wartime demand would push consumer prices up faster than at any point since the aftermath of World War I. First-class postage held at 3 cents, and the federal minimum wage stayed at 30 cents an hour, the level set the previous October under the Fair Labor Standards Act.

More about inflation in 1940 →