The chart illustrates number of households in the US by their annual income in 2007, 2011 and 2015 in five groups of income. Units are measured in millions.
Overall, most of the people more than 100,000 in the given years in USA. Whereas, the least proportion of income for households who income in between 75,000 and 99,999. Furthermore, who salary between 25,000 and 49,999, in the second in following years.
With regard to the chart, in 2007 households in the US income started for 30 million followed by slowly increase in 2007. In the last year, increased sharply approximately 35 million in 2007. Number of household income less than 25,000 and between 25,000 and 49,000 just over 25 millions in the first year however, they rise mildly in 2011, and also their figure unchanged in 2007.
In contrast, number of households in the US income between 50,000 and 74,999 and 75,000 to 99,000 always share smallest number of income the following years. They started at around 20 and 15 by order, meanwhile remained unchanged until 2015.