Value of $100 in 1920, adjusted to 1974

What happened to prices between 1920 and 1974

Between 1920 and 1974, the Consumer Price Index went from 20 to 49.3. Cumulatively, prices increased 146.5%, which works out to an average of 1.68% per year. Put differently, a dollar in 1920 bought what $0.41 buys in 1974.

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: 1974

1974 was the year the postwar economy broke its old rules. Consumer prices rose 11.0%, the fastest annual increase since 1947, as the Arab oil embargo that ran from October 1973 to March 1974 roughly quadrupled the price of crude oil worldwide. Gasoline, which had averaged 38.5 cents a gallon in 1973, jumped to 53.2 cents, and shortages forced many states into odd-even rationing at the pump. Nixon’s wage and price controls, in place in some form since 1971, expired at the end of April, removing the last brake on prices just as the oil shock hit. Nixon himself resigned in August over Watergate, and Gerald Ford’s response to inflation, a voluntary “Whip Inflation Now” campaign built around lapel buttons, became a symbol of how little conventional politics could do against the problem. Prices kept climbing even as the economy weakened: a recession that started in November 1973 dragged on, the Dow fell to a bear-market bottom of 577.60 in December, and unemployment was already rising toward the 9% it would reach in 1975. The combination of rising prices and a shrinking economy gave the decade its name: stagflation.

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