The number of people with high-speed Internet connections to their homes increased 50 percent in the 12 months ended March 31, but that rate of growth shows signs of slowing, according to a study on U.S. Internet usage by the Pew Internet & American Life Project.

Roughly 31 million Americans — about 31 percent of whom use the Web at home — access the Internet through cable modems, digital subscriber lines (DSL) or satellite dishes, according to the study, which surveyed 1,495 people in March and which was released yesterday. In less than three years, the number of people with high-speed connections increased fivefold, it said.

But there are indications that interest may be waning.
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