Value of $100 in 1920, adjusted to 1965

What happened to prices between 1920 and 1965

Between 1920 and 1965, the Consumer Price Index went from 20 to 31.5. Cumulatively, prices increased 57.5%, which works out to an average of 1.01% per year. Put differently, a dollar in 1920 bought what $0.63 buys in 1965.

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: 1965

Consumer prices rose 1.6% in 1965, up from 1964’s 1.3% in a pickup that economists later mark as the start of the Great Inflation, a run of accelerating price increases driven by rising Vietnam War spending layered on top of new Great Society programs. The war itself escalated on the ground that March, when about 3,500 Marines came ashore at Da Nang, the first American combat troops committed to Vietnam; troop levels would climb toward 200,000 by year’s end. Domestic policy expanded just as fast: Medicare and Medicaid became law that July 30, creating federal health insurance for older and low-income Americans, and the Voting Rights Act, signed that August 6, banned literacy tests and other devices used to disenfranchise Black voters. The civil rights movement’s gains coexisted with urban unrest that same August, when a highway patrol traffic stop in the Watts neighborhood of Los Angeles set off six days of rioting that left 34 people dead. Consumer prices finished 1965 218.2% above their 1913 level. First-class postage held at 5 cents, and the minimum wage stayed at $1.25 an hour.

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