Value of $100 in 1915, adjusted to 1949

What happened to prices between 1915 and 1949

Between 1915 and 1949, the Consumer Price Index went from 10.1 to 23.8. Cumulatively, prices increased 135.6%, which works out to an average of 2.55% per year. Put differently, a dollar in 1915 bought what $0.42 buys in 1949.

Consumer prices rose 1.0% in 1915, the second straight year of near-flat inflation before the wartime price surges of 1916 through 1918. The year’s defining event had nothing to do with prices directly: a German submarine sank the British liner Lusitania off the Irish coast on May 7, killing 128 Americans and hardening U.S. opinion against Germany two years before the country entered the war. Economically, 1915 was a turning point of a different kind. A recession that had dragged on since 1913 began lifting as Britain and France placed growing orders for steel, munitions, and other war materiel with American manufacturers, and U.S. exports to the Allied powers climbed sharply through the year. That demand would keep building through 1916, eventually pulling prices up with it. On the regulatory side, the Federal Trade Commission opened for business in March, taking on enforcement of the Clayton Antitrust Act that Congress had passed the previous fall. A first-class stamp still cost 2 cents, unchanged since 1885 and still two years from its first wartime increase.

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The destination year: 1949

Consumer prices fell 1.2% in 1949, down from 1948’s 8.1% gain and the first annual decline since 1939, the first real break in a decade otherwise defined by wartime and postwar inflation. A mild recession drove the drop: the National Bureau of Economic Research dates a downturn from November 1948 to October 1949, as businesses worked off inventories built up during the postwar buying boom and price pressure finally eased. The Cold War hardened around the same time. On April 4, the United States, Canada, and ten Western European nations signed the North Atlantic Treaty, committing to treat an attack on one member as an attack on all and formalizing the Western alliance against Soviet expansion. That August 29, the Soviet Union tested its first atomic bomb, ending the American nuclear monopoly just four years after Hiroshima and Nagasaki and setting off an arms race that would run for decades. Congress closed out the decade’s wage policy that October, passing the Fair Labor Standards Amendments of 1949 to raise the federal minimum wage to 75 cents an hour effective the following January, nearly double the 40 cents that had held since 1945. The decade closed with consumer prices 140.4% above their 1913 level, up 70% since 1940 alone even after 1949’s decline. First-class postage held at 3 cents.

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