The chart below shows the number of households in the US by their annual income in 2007, 2011 and 2015. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The bar chart compares the

number

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of families in America by their economic status in the years 2007, 20011, and 2015.

Overall

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, the households are in five groups and all experienced a slight upward trend over the eight years. Families that gain $75,000-$99,999 per year consistently made up the least share among all five categories, and those that gain

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hundred

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thousand or more are nearly the largest proportion. For households that had $50,000-$74999 and $75,000-$99999 annual income, the numbers fluctuated with less than a percentage change

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21% and 14%, respectively, throughout the period, making them the two categories with the smallest shares. Meanwhile, the other three groups that contribute over a quarter of the

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of residents each witnessed a more dramatic change. The

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of families possessing less than $25,000 and $25,000-$49,999 annual income peaked at 28 million and 29 million in 2007, respectively, before having a roughly 3% growth in 2015 compared to 2007.

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, there was about 7% growth in the

number

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of households for those who gained $100,000 or more from 2007 to 2015.