Value of $100 in 1918, adjusted to 1973

What happened to prices between 1918 and 1973

Between 1918 and 1973, the Consumer Price Index went from 15.1 to 44.4. Cumulatively, prices increased 194.0%, which works out to an average of 1.98% per year. Put differently, a dollar in 1918 bought what $0.34 buys in 1973.

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: 1973

Consumer prices rose 6.2% in 1973, nearly double 1972’s 3.2%, as Nixon’s wage and price controls were phased out through the year and pressure the controls had been holding back broke loose. The bigger shock arrived that October, when Arab oil-producing states embargoed exports to the United States and other supporters of Israel in the Yom Kippur War. Crude oil, which had traded around $3 a barrel, approached $12 by early 1974, and gas lines became a fixture outside filling stations nationwide. Earlier in the year, the Paris Peace Accords, signed that January 27, ended direct American combat in Vietnam and set a 60-day deadline for withdrawing remaining U.S. troops, even as fighting between North and South Vietnam went on. Financial markets read the year correctly as a turning point: the Dow Jones Industrial Average peaked at 1,051.70 on January 11, a level it would not reach again until 1980, before the oil shock and rising interest rates dragged it into a two-year bear market. A median household earned $10,512 in 1973, a new home sold for a median $32,500, and gas averaged 38.5 cents a gallon, still under half of what the embargo’s effects would bring the following year. Consumer prices stood 348.5% above their 1913 level by year’s end, with the decade’s worst inflation still ahead.

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