Value of $100 in 1918, adjusted to 1933

What happened to prices between 1918 and 1933

Between 1918 and 1933, the Consumer Price Index went from 15.1 to 13. Cumulatively, prices declined 13.9%, which works out to an average of -0.99% per year. Put differently, a dollar in 1918 bought what $1.16 buys in 1933.

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: 1933

Consumer prices fell 5.1% in 1933, a smaller decline than 1932’s but enough to complete a four-year slide of 24.0% from the 1929 peak. The National Bureau of Economic Research dates the trough of that contraction to March 1933, closing out the longest downturn in its chronology, one that had run 43 months since August 1929. The bottom arrived alongside a change in government: Franklin D. Roosevelt was inaugurated March 4 and, within 48 hours, ordered every bank in the country closed to halt a fresh round of runs. Congress passed the Emergency Banking Act on March 9, letting solvent banks reopen under federal supervision, and the panic that had been building for months broke almost immediately. The administration moved on the currency next: Executive Order 6102, issued April 5, required Americans to turn in most gold coin, bullion, and certificates to the Federal Reserve, taking the country off the domestic gold standard (formal devaluation of the dollar followed the next January). Congress capped the year’s banking overhaul in June with the Banking Act of 1933, commonly called Glass-Steagall, which created the Federal Deposit Insurance Corporation and separated commercial banking from investment banking. Even after four straight years of falling prices, the CPI still stood 31.3% above its 1913 level. First-class postage held at 3 cents.

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