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 the amount of United States

households

categorising by their yearly earnings in 2007, 2011 and 2015.

Overall

,

households

that had an income in the range of $75,000-$99,999 or more were the least across three years, followed by the group of $50,000-$74,999 and less than $25,000 respectively,

whereas

the top three highest groups varied among years. In 2007 and 2015, people whose annual income was $100,000 or more ranked the biggest proportion in the nation.

However

, the difference between these years was the gap between the second group

of

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earning $25,000-$49,000.

While

the gap in 2015 was approximately 5

millions

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million

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households

, that of 2007 was merely 2

millions

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million

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. Families who yielded $25,000-$49,000 in 2011 were the mainstream segment,

while

$100,000 or more was in the following place.

Nevertheless

, the difference was the smallest at 1 million

households

between the two ranges.