U.S. inflation · 1971–1991
$100 in 1971 has the same buying power as
$336
in 1991
| Cumulative price change | 236.3% |
|---|---|
| Average inflation rate | 6.25% per year |
| Converted amount ($100 base) | $336 |
| Price difference ($100 base) | $236 |
| CPI in 1971 | 40.5 |
| CPI in 1991 | 136.2 |
| Inflation in 1971 | 4.38% |
| Inflation in 1991 | 4.21% |
| $100 in 1971 → 1991 | $336 |
| $100 in 1991 → 1971 | $29.74 |
Between 1971 and 1991, the Consumer Price Index went from 40.5 to 136.2. Cumulatively, prices increased 236.3%, which works out to an average of 6.25% per year. Put differently, a dollar in 1971 bought what $0.30 buys in 1991.
| Amount in 1971 | Value in 1991 |
|---|---|
| $1.00 | $3.36 |
| $5.00 | $16.81 |
| $10.00 | $33.63 |
| $20.00 | $67.26 |
| $50.00 | $168 |
| $100 | $336 |
| $500 | $1,681 |
| $1,000 | $3,363 |
| $5,000 | $16,815 |
| $10,000 | $33,630 |
| $100,000 | $336,296 |
| $1,000,000 | $3,362,963 |
The headline number is an average. Individual categories moved very differently over this period. Here is what $100 of 1971 spending costs in 1991, by category:
| Category | Avg. yearly inflation | $100 in 1971 → |
|---|---|---|
| All items (CPI-U) | 6.25% | $336 |
| Medical care | 8.27% | $490 |
| Energy | 7.00% | $387 |
| Housing | 6.49% | $352 |
| Food | 6.27% | $337 |
| Core (all items less food & energy) | 6.20% | $333 |
| Transportation | 5.88% | $313 |
| Apparel | 3.80% | $211 |
Not shown because the BLS began these indexes after 1971: recreation (1993–), education & communication (1993–).
| Year | CPI | Inflation rate | $100 from 1971 |
|---|---|---|---|
| 1971 | 40.5 | 4.4% | $100 |
| 1972 | 41.8 | 3.2% | $103 |
| 1973 | 44.4 | 6.2% | $110 |
| 1974 | 49.3 | 11.0% | $122 |
| 1975 | 53.8 | 9.1% | $133 |
| 1976 | 56.9 | 5.8% | $140 |
| 1977 | 60.6 | 6.5% | $150 |
| 1978 | 65.2 | 7.6% | $161 |
| 1979 | 72.6 | 11.3% | $179 |
| 1980 | 82.4 | 13.5% | $203 |
| 1981 | 90.9 | 10.3% | $224 |
| 1982 | 96.5 | 6.2% | $238 |
| 1983 | 99.6 | 3.2% | $246 |
| 1984 | 103.9 | 4.3% | $257 |
| 1985 | 107.6 | 3.6% | $266 |
| 1986 | 109.6 | 1.9% | $271 |
| 1987 | 113.6 | 3.6% | $280 |
| 1988 | 118.3 | 4.1% | $292 |
| 1989 | 124 | 4.8% | $306 |
| 1990 | 130.7 | 5.4% | $323 |
| 1991 | 136.2 | 4.2% | $336 |
MLA: “Inflation from 1971 to 1991: $100 is worth $336 today.” InflationCalculator.com, U.S. Bureau of Labor Statistics CPI-U data, https://inflationcalculator.com/inflation/1971-to-1991/
APA: InflationCalculator.com. Inflation from 1971 to 1991. Based on U.S. Bureau of Labor Statistics CPI-U data. Retrieved from https://inflationcalculator.com/inflation/1971-to-1991/
Source: U.S. Bureau of Labor Statistics, CPI-U annual averages (series CUUR0000SA0; category indexes listed on the data sources page). See how these numbers are calculated.