Value of $100 in 1920, adjusted to 1936

What happened to prices between 1920 and 1936

Between 1920 and 1936, the Consumer Price Index went from 20 to 13.9. Cumulatively, prices declined 30.5%, which works out to an average of -2.25% per year. Put differently, a dollar in 1920 bought what $1.44 buys in 1936.

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: 1936

Consumer prices rose 1.5% in 1936, a third straight annual increase and part of a slow, steady climb back from the 1933 trough, though prices and the broader economy still had not fully recovered to their pre-Depression levels. Voters delivered their verdict on that recovery in November, reelecting Franklin D. Roosevelt over Republican Alf Landon in one of the most lopsided elections in U.S. history: Roosevelt carried 46 of 48 states and won the Electoral College 523 to 8, a broad public endorsement of the New Deal. Public works kept advancing that year, too. Hoover Dam, one of the era’s signature projects, had been dedicated in September 1935, but its first generators did not begin sending electricity over transmission lines to Los Angeles until October 1936, a milestone that showed how long even a celebrated project took to reach full operation. Consumer prices ended the year 40.4% above their 1913 level, still 18.7% below the 1929 peak, a gap that would keep narrowing until a sharp new recession interrupted the recovery the following year. First-class postage held at 3 cents.

More about inflation in 1936 →