President Barack Obama has increased U.S. marketable debt to a record as he borrows to reignite growth in the world’s biggest economy. That’s boosted speculation increased money supply will debase the currency and spur inflation.

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U.S. consumer prices will expand 1 percent this quarter and 1.9 percent and 1.8 percent in the following two quarters respectively, according to the median estimate of 66 economists surveyed by Bloomberg.

Oil futures, used by some investors as an inflation guide, gained as much as 0.9 percent to $73.96 a barrel today in New York, after climbing 2.1 percent yesterday. The U.S. Dollar Index, which last week dropped to the lowest level in almost 14 months, was 0.2 percent lower today.