Value of $100 in 1934, adjusted to 1970

What happened to prices between 1934 and 1970

Between 1934 and 1970, the Consumer Price Index went from 13.4 to 38.8. Cumulatively, prices increased 189.6%, which works out to an average of 3.00% per year. Put differently, a dollar in 1934 bought what $0.35 buys in 1970.

Consumer prices rose 3.1% in 1934, the first annual increase since 1926; every year from 1927 through 1933 had been flat or falling, so the turn marked a real break after eight years without a single gain. Currency policy did some of the work. The Gold Reserve Act, signed January 30, formally devalued the dollar by raising the official price of gold from $20.67 to $35 an ounce, part of the administration’s deliberate effort to reflate prices after four straight years of deflation. Financial regulation tightened at the same time: the Securities Exchange Act of June 6 created the Securities and Exchange Commission to police stock exchanges and enforce disclosure rules, a direct response to the speculation blamed for the 1929 crash. The recovery was fragile and unevenly felt, especially on the Great Plains, where drought had turned overplowed farmland to dust. Over May 9-11, high winds lifted an estimated 350 million tons of topsoil into the air, darkening skies as far away as Washington and New York and giving city readers who had never seen a wheat field a first glimpse of the disaster building in Kansas, Oklahoma, and Texas. Consumer prices stood 35.4% above their 1913 level, still well below the 1929 peak but rising for the first time since the Depression began. First-class postage held at 3 cents.

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The destination year: 1970

Consumer prices rose 5.7% in 1970, up from 1969’s 5.5%, extending a run of faster price growth that stretched back to the mid-1960s, even as a recession that began in December 1969 pushed unemployment toward 6%. Prices and joblessness rising together confounded the era’s economic thinking, which held that policymakers could trade a little more inflation for a little less unemployment; 1970 was an early sign that trade-off was breaking down, a pattern that would harden into stagflation later in the decade. Washington restructured how it delivered mail that year: after postal workers staged the first strike ever by federal employees that March, Congress passed the Postal Reorganization Act in August, replacing the cabinet-level Post Office Department with the independent U.S. Postal Service. Environmental policy also took shape in 1970. An estimated 20 million Americans marked the first Earth Day on April 22, and the Environmental Protection Agency opened that December to enforce the Clean Air Act and the pollution rules that followed. The Vietnam War kept dividing the country: on May 4, National Guard troops fired on antiwar demonstrators at Kent State University in Ohio, killing four students and setting off strikes on hundreds of campuses. A median household earned $8,734 that year, a gallon of gas averaged 36 cents, and a first-class stamp cost 6 cents, the rate it had held since 1968. Prices stood 291.9% above their 1913 level by the end of 1970, a milestone that would look almost mild against the decade still to come.

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