Value of $100 in 1920, adjusted to 1934

What happened to prices between 1920 and 1934

Between 1920 and 1934, the Consumer Price Index went from 20 to 13.4. Cumulatively, prices declined 33.0%, which works out to an average of -2.82% per year. Put differently, a dollar in 1920 bought what $1.49 buys in 1934.

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: 1934

Consumer prices rose 3.1% in 1934, the first annual increase since 1926; every year from 1927 through 1933 had been flat or falling, so the turn marked a real break after eight years without a single gain. Currency policy did some of the work. The Gold Reserve Act, signed January 30, formally devalued the dollar by raising the official price of gold from $20.67 to $35 an ounce, part of the administration’s deliberate effort to reflate prices after four straight years of deflation. Financial regulation tightened at the same time: the Securities Exchange Act of June 6 created the Securities and Exchange Commission to police stock exchanges and enforce disclosure rules, a direct response to the speculation blamed for the 1929 crash. The recovery was fragile and unevenly felt, especially on the Great Plains, where drought had turned overplowed farmland to dust. Over May 9-11, high winds lifted an estimated 350 million tons of topsoil into the air, darkening skies as far away as Washington and New York and giving city readers who had never seen a wheat field a first glimpse of the disaster building in Kansas, Oklahoma, and Texas. Consumer prices stood 35.4% above their 1913 level, still well below the 1929 peak but rising for the first time since the Depression began. First-class postage held at 3 cents.

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