Between 1917 and 1980, the Consumer Price Index went from 12.8 to 82.4.
Cumulatively, prices increased 543.8%, which works out to an average of
3.00% per year. Put differently, a dollar in 1917 bought what
$0.16 buys in 1980.
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.
The headline number is an average. Individual categories moved very differently over this
period. Here is what $100 of 1917 spending costs in 1980, by category:
Category
Avg. yearly inflation
$100 in 1917 →
All items (CPI-U)
3.00%
$644
Food
2.88%
$599
Apparel
2.42%
$450
Not shown because the BLS began these indexes after 1917: core (all items less food & energy) (1957–), energy (1957–), housing (1967–), medical care (1935–), transportation (1935–), recreation (1993–), education & communication (1993–).
Long periods are sampled every 5 years; the calculator above covers any pair of years.
The destination year: 1980
1980 sat at the very peak of the Great Inflation. Prices rose 13.5% in that
single year, mortgage rates were climbing toward 16%, and the Federal Reserve
under Paul Volcker was administering the painful interest-rate medicine that
would finally break the inflationary spiral, at the cost of the deep 1981–82
recession. No single year looms larger in how Americans think about inflation.
MLA: “Inflation from 1917 to 1980: $100 is worth $644 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1917-to-1980/
APA: InflationCalculator.com. Inflation from 1917 to 1980. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1917-to-1980/