The bar chart illustrates the number of citizens in four different groups which are categorised by their income in the years 2007, 2011 and 2015. The unit on the Y-axis is shown in millions.
The bar chart illustrates data regarding the number of households United States, while categorized by their yearly salaries within the years 2007, 2011, and 2015 respectively. Overall, the people who made less than $50,0