Value of $100 in 1918, adjusted to 1947

What happened to prices between 1918 and 1947

Between 1918 and 1947, the Consumer Price Index went from 15.1 to 22.3. Cumulatively, prices increased 47.7%, which works out to an average of 1.35% per year. Put differently, a dollar in 1918 bought what $0.68 buys in 1947.

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: 1947

Consumer prices rose 14.4% in 1947, up from 1946’s 8.3% and the fastest annual increase since 1920, as the last of the wartime price controls disappeared and a year of strikes, wage catch-up, and lingering shortages hit consumers all at once. Congress answered the previous year’s strike wave that June, overriding President Truman’s veto to pass the Taft-Hartley Act, which banned secondary boycotts and the closed shop and let states adopt “right-to-work” laws curbing union power. American attention was also turning outward. In a June 5 speech at Harvard, Secretary of State George Marshall outlined a U.S.-funded plan to rebuild Western Europe’s economies, an effort that would become known as the Marshall Plan once Congress funded it the following year. The government reorganized itself for the confrontation with the Soviet Union that plan was partly designed to prevent: the National Security Act, signed July 26, created the Department of Defense, the Air Force as a separate service, the Central Intelligence Agency, and the National Security Council. Consumer prices stood 125.3% above their 1913 level and 30.4% above 1929’s pre-Depression peak, up from just 1.2% above it four years earlier. First-class postage held at 3 cents, and the minimum wage stayed at 40 cents an hour.

More about inflation in 1947 →