Value of $100 in 1937, adjusted to 2009

What happened to prices between 1937 and 2009

Between 1937 and 2009, the Consumer Price Index went from 14.4 to 214.537. Cumulatively, prices increased 1389.8%, which works out to an average of 3.82% per year. Put differently, a dollar in 1937 bought what $0.07 buys in 2009.

Consumer prices rose 3.6% in 1937, the fastest pace since before the Depression and the fourth straight year of gains, leaving prices 10.8% above their 1933 trough though still 15.8% below the 1929 peak. The recovery did not last the year. The National Bureau of Economic Research dates a new business cycle peak to that May, the start of what became known as the Recession of 1937-38. Policy tightened on two fronts at once: the Federal Reserve had doubled bank reserve requirements over the preceding year to head off inflation it worried was building, and the federal government pulled back its own spending even as new Social Security payroll taxes began draining money from paychecks months before the first benefit checks went out. Together they choked off a recovery that had not yet reached its pre-Depression footing. Not every milestone that year was economic. The Golden Gate Bridge opened to traffic on May 27 after four years of construction, at the time the longest suspension bridge span in the world, a rare bright spot in a year that would end with the economy sliding backward again. First-class postage held at 3 cents.

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The destination year: 2009

2009 is the rarest kind of year in the modern price data: one where the cost of living went down. The CPI fell 0.4%, the first full-year deflation since 1955, as the Great Recession hollowed out demand and oil unwound from its $147 spike the summer before. Gasoline that had cost over $4 a gallon in July 2008 averaged $2.35 in 2009, and that energy collapse dragged the 12-month inflation rate to −2.1% by July, the deepest reading since 1950. Policymakers treated falling prices not as relief but as a warning: deflation raises the real weight of debt precisely when households are drowning in it, which is why the Federal Reserve pinned interest rates near zero, began buying bonds by the hundreds of billions, and Washington passed a $787 billion stimulus. The medicine took: prices stabilized within a year, and 2009 remains the textbook case of why central banks fear deflation more than moderate inflation.

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