The chart below shows the number of households in the US by their annual income in 2007, 2011 and 2015.

The given bar chart illustrates the amount of yearly revenue for families in the years of 2007, 2011 and 2015. The unit of measure is in millions.

Overall

, there were 5 groups represented in the chart, starting at less than $25,000, and the maximum amount was more than $100,000. The largest number of households’ annual income was the

group

of more than $100,000 in 2015

while

the smallest one was the

group

between $75,000-$99,999 in 2011. At first glance, it is clear

to see

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that except for during the year

of

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2011, the major groups of $100,000 and more reached the highest annual income in 2007 and 2015 by almost 30 and around 35 million families, respectively.

Whereas

, the yearly earning

group

between 25 thousand to nearly 50 thousand in 2011 had led the largest number of families at approximately 30 million which was

also

twice higher than the

group

of $75,000-$99,999

in

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each year.