Value of $100 in 1918, adjusted to 1958

What happened to prices between 1918 and 1958

Between 1918 and 1958, the Consumer Price Index went from 15.1 to 28.9. Cumulatively, prices increased 91.4%, which works out to an average of 1.64% per year. Put differently, a dollar in 1918 bought what $0.52 buys in 1958.

1918 brought the steepest annual price increase the CPI had recorded: consumer prices rose 18.0% for the year, edging out 1917’s already sharp 17.4% as the economy stayed at full wartime mobilization for most of the year. A first-class stamp cost 3 cents, up from 2 cents the previous November under the War Revenue Act’s wartime tax increases. The war itself ended on November 11, when Germany signed an armistice with the Allied powers after more than four years of fighting in Europe, but the inflation built up over a year and a half of mobilization did not disappear along with the fighting. The bigger public health story that year was the influenza pandemic that reached the U.S. in a mild spring wave and then returned that fall in a far deadlier form, eventually killing roughly 675,000 Americans, more than the country’s combat losses in the war. It hit factories, docks, and shops alongside households, adding disruption to an economy already strained by wartime demand. Prices would keep climbing even after the armistice, into the postwar surge of 1919.

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The destination year: 1958

Consumer prices rose 2.8% in 1958, down only slightly from 1957’s 3.3% even as the country sank into the sharpest postwar recession to that point, an early sign that inflation and a shrinking economy could coexist rather than trade off against each other. The National Bureau of Economic Research dates the downturn’s trough to that April, with unemployment peaking near 7.5% that summer, the worst reading since the 1930s. The Post Office raised first-class postage to 4 cents that August 1, up from 3 cents, the rate’s first change since 1932. Washington answered the Soviet Union’s technological lead that summer too: Eisenhower signed the National Aeronautics and Space Act on July 29, establishing NASA, which opened for business that October 1 to compete with the Soviet space program after the shock of Sputnik the year before. Consumer prices finished 1958 191.9% above their 1913 level. The minimum wage held at $1.00 an hour, and first-class postage rose to 4 cents that August, the first increase since 1932.

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