Between 1966 and 1975, the Consumer Price Index went from 32.4 to 53.8.
Cumulatively, prices increased 66.0%, which works out to an average of
5.80% per year. Put differently, a dollar in 1966 bought what
$0.60 buys in 1975.
Common amounts: 1966 dollars in 1975
Amount in 1966
Value in 1975
$1.00
$1.66
$5.00
$8.30
$10.00
$16.60
$20.00
$33.21
$50.00
$83.02
$100
$166
$500
$830
$1,000
$1,660
$5,000
$8,302
$10,000
$16,605
$100,000
$166,049
$1,000,000
$1,660,494
Inflation by spending category, 1966–1975
The headline number is an average. Individual categories moved very differently over this
period. Here is what $100 of 1966 spending costs in 1975, by category:
Category
Avg. yearly inflation
$100 in 1966 →
All items (CPI-U)
5.80%
$166
Energy
6.79%
$181
Medical care
6.79%
$181
Food
6.54%
$177
Core (all items less food & energy)
5.43%
$161
Transportation
5.00%
$155
Apparel
4.45%
$148
Not shown because the BLS began these indexes after 1966: housing (1967–), recreation (1993–), education & communication (1993–).
MLA: “Inflation from 1966 to 1975: $100 is worth $166 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1966-to-1975/
APA: InflationCalculator.com. Inflation from 1966 to 1975. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1966-to-1975/