In 1925, the price of a pound of bread in the United States of America was 9.3 cents; in 2015, it was $1.44. This represents an increase of 1,548 percent in 90 years. These figures are statistical averages for the country as a whole and do not reflect local variations.
A standard purchasing power calculation shows that, on average, 9 cents worth of commodities in 1925 would cost $1.22 as of 2014, the latest year for which this calculation can be done in full. This suggests that bread has risen in cost by more than other commodities over the 90 year period, though it is cheaper in 2015 than in 2011, when a pound of bread cost $1.48.