Value of $100 in 1926, adjusted to 1929

What happened to prices between 1926 and 1929

Between 1926 and 1929, the Consumer Price Index went from 17.7 to 17.1. Cumulatively, prices declined 3.4%, which works out to an average of -1.14% per year. Put differently, a dollar in 1926 bought what $1.04 buys in 1929.

Consumer prices rose 1.1% in 1926, a third straight year of mild inflation and part of the price stability that defined the middle of the decade. Florida’s real estate boom, which had peaked the previous year on speculative buying of undeveloped land, ended abruptly that September when the Great Miami Hurricane made landfall near the city, killing hundreds and wrecking the market for land whose value had rested on continued speculation rather than anything underneath it. In Detroit, Henry Ford moved his company to a five-day, 40-hour work week without cutting pay, a break from the standard six-day schedule that other large employers would gradually adopt over the following decades; Ford argued publicly that workers with more leisure time would also become better customers for the cars his factories built. Consumer prices remained low enough by historical standards that a first-class stamp still cost just 2 cents, the same price it had held since mid-1919.

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The destination year: 1929

Consumer prices were unchanged in 1929, the CPI’s annual average flat for the second time in six years and a fitting close to a decade that began with wartime inflation and ended in rough price stability. By year’s end the index stood 14.5% below its 1920 peak and roughly 73% above its 1913 starting point, a reminder that even a “stable” decade left prices well above where they had started. The stability in the cost of living masked what was building in financial markets. The National Bureau of Economic Research dates the start of the Great Depression to that August, the month the business cycle peaked, months before most Americans noticed anything was wrong. The break came that October: panic selling hit Wall Street on Black Thursday, October 24, and returned even worse on Black Tuesday, October 29, when the Dow Jones Industrial Average fell about 12% in a single session. Billions of dollars in paper wealth disappeared within days, and the crash marked the start of a downturn that would pull consumer prices into their steepest sustained decline of the 20th century over the next four years. First-class postage was still 2 cents, a price that would hold until 1932.

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