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The image depicts a bar graph titled "Number of US households (in millions), by annual income" comparing household income distributions for the years 2007, 2011, and 2015. The vertical axis measures the number of households in millions, ranging from 0 to 35 in increments of 5. The horizontal axis lists the years surveyed. Household incomes are segmented into five categories, each represented by a distinct shading pattern: less than $25,000, $25,000–$49,999, $50,000–$74,999, $75,000–$99,999, and $100,000 or more. Every year shows a different number of households across the income ranges, with the bars for each income category side by side for comparison across the years.
Given the complexity of the image, the above description may not be entirely accurate.
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The graph illustrats the data of different levels of annual wage of families in the united states in 2007, 2011 and 2015.
As far as the number of families whose annual income was less than $25,000, it began with around >5 million in 2007, then increased to approximately 27 million in 2011, but decreased by 2 million 4 years later. Similarly, those of families that earned $25,000 to $49,999 were about 25 million in 2007, after that it rose to nearly 30 million in 2011. Finally it decreased to around 27 million in 2015.
By contrast, the groups of families which have high income, including $75,000 to $99.999 and $100,000 or more, experienced a drop in 2011, but their data went up in 2015.
Interesting things could be seen in the group of middle income, the data remain the same in 2007, 2011 and 2015.
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