Value of $100 in 1917, adjusted to 1925

What happened to prices between 1917 and 1925

Between 1917 and 1925, the Consumer Price Index went from 12.8 to 17.5. Cumulatively, prices increased 36.7%, which works out to an average of 3.99% per year. Put differently, a dollar in 1917 bought what $0.73 buys in 1925.

1917 is when World War I inflation stopped being a background trend and became the dominant fact of American economic life. Consumer prices rose 17.4% for the year, more than double the previous year’s already sharp increase, as the country’s April 6 entry into the war layered federal war spending on top of an economy already strained by military demand and worker shortages. Congress paid for the war with the War Revenue Act that October, which sharply raised income taxes, created a new tax on wartime business profits, and, in a small but very visible change for ordinary households, raised the cost of a first-class stamp from 2 cents to 3 cents that November, the rate’s first move since 1885. Herbert Hoover took over the new Food Administration in August and asked Americans to conserve food voluntarily rather than face formal rationing, a campaign that became famous enough that “Hooverize” entered the language as a verb for cutting back. None of it slowed prices much: the 17.4% increase would be topped again the very next year, in 1918.

More about inflation in 1917 →

The destination year: 1925

Consumer prices rose 2.3% in 1925, the CPI’s largest single-year increase since the deflationary swings of the early 1920s, though still mild next to the double-digit inflation of the World War I years. The country’s cultural fault lines were on full display that summer in Dayton, Tennessee, where high school teacher John Scopes was tried July 10-21 for violating a state law against teaching evolution, a case that drew national press coverage and pitted prosecutor William Jennings Bryan against defense attorney Clarence Darrow. Real estate speculation, meanwhile, peaked in Florida, where buyers flipped undeveloped land in the Miami area on thin down payments, driving prices far above what the land itself could support; the bubble would collapse the following year. Detroit reshuffled that June too: Walter Chrysler reorganized the struggling Maxwell Motor Company into Chrysler Corporation, the start of what would become one of the American auto industry’s “Big Three.” First-class postage held at 2 cents for the sixth straight year.

More about inflation in 1925 →