The population of the United States in 2008 is 298528793.
Gross domestic product (GDP) is the total monetary or market value of all the finished goods and services produced within a country's over a specific time period
GDP per person = GDP / Population
From the question, GDP = $14.204 trillion, GDP per person was $47,580. Hence:
47580 = 14.204 * 10¹² / Population
Population = 298528793
The population of the United States in 2008 is 298528793.
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