Value of $100 in 1917, adjusted to 1919

What happened to prices between 1917 and 1919

Between 1917 and 1919, the Consumer Price Index went from 12.8 to 17.3. Cumulatively, prices increased 35.2%, which works out to an average of 16.26% per year. Put differently, a dollar in 1917 bought what $0.74 buys in 1919.

1917 is when World War I inflation stopped being a background trend and became the dominant fact of American economic life. Consumer prices rose 17.4% for the year, more than double the previous year’s already sharp increase, as the country’s April 6 entry into the war layered federal war spending on top of an economy already strained by military demand and worker shortages. Congress paid for the war with the War Revenue Act that October, which sharply raised income taxes, created a new tax on wartime business profits, and, in a small but very visible change for ordinary households, raised the cost of a first-class stamp from 2 cents to 3 cents that November, the rate’s first move since 1885. Herbert Hoover took over the new Food Administration in August and asked Americans to conserve food voluntarily rather than face formal rationing, a campaign that became famous enough that “Hooverize” entered the language as a verb for cutting back. None of it slowed prices much: the 17.4% increase would be topped again the very next year, in 1918.

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The destination year: 1919

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.

More about inflation in 1919 →