The consumer price index, which measures the cost of living, rose by a seasonally adjusted 0.6 percent last month, the largest jump in four years.
MarketWatch reports that gas prices account for half of the increase in inflation. A gallon of gas is up to $2.30 from under $2 last spring.
Over the past year the consumer price index has climbed 2.5%, the biggest increase in a 12-month span in five years.
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