In the United States, as measured by real GDP per person, average income is about how many times as high as average income a century ago?

Name: In the United States, as measured by real GDP per person, average income is about how many times as high as average income a century ago?
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The Answer of In the United States, as measured by real GDP per person, average income is about how many times as high as average income a century ago?

In the United States, as Measured by Real GDP Per