출처: http://www.bbc.com/news/world-us-canada-37345443 'Fastest ever' leap in US household incomes 13 September 2016 From the sectionUS & CanadaShareImage copyrightGETTY IMAGESAverage American incomes rose by 5.2% in 2015, in the fastest increase ever recorded by the federal government. The annual report from the Census Bureau also found that the poverty rate fell for all ra..