The bar chart illustrates the annual income of US households divided into five different groups in three different years: 2007, 2011, 2015.
Overall, the majority of US households had an income of $100,000 or more, while the $75,000 to $99,999 income group accounted for a minority.
In 2007, the less than $25,000 income group and the $25,000 to $49,999 group accounted for 25% and 27% respectively. Over the four year period, all of both categories increased slightly, by 28% and 30% respectively, before experiencing a minimal reduction in 2015. The number of US households earning from $50,000 to $74,000 remained relatively stable from 2007 to 2015.
In the $75,000 to $99,999 income category, there was moderate fluctuation in the years studied. Roughly 14% of the proportion of US households earning between $75,000 to $99,999 in 2007. In 2011, the income of that group hit a low of only 13%, then increased insignificantly to 15% by 2015. By contrast, in 2007 the $100,000 or more income category recorded 30% which was the highest income group among all five categories, reaching a peak of 33% in 2015.