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 illustrates key information about the annual

income

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of the United States

households

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in the years 2007, 2011, and 2015.

Overall

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, it is clear from the graph that there are five categories of family

income

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,which are less than $25,000, $25,000–$49,999, $50,000–$74,999, $75,000–$99,999, and $100,000 or more.

In addition

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, the trend varied moderately over the period.

According to

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what is seen, the number of

households

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that had

income

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more than $100,000 grew dramatically and was around 30

million

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.

In contrast

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, there is a sharp fall in the number of

households

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that reached $75,000–$99,999, at 15

million

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. In 2011, the figure for

households

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whose

income

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was less than $25,000 and $25,000-$49,999 was almost 30

million

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.

However

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, in 2015, the annual

income

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of families having more than $100,000 rose substantially, by approximately 35

million

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