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

The bar chart illustrates the number of US

households

sectored by five annual revenue groups (less than $25,000, $25,000-$49,999, $50,000-$74,999, $75,000-99,999, and above $100,000) in the years of 2007, 2011, and 2015. Units are measured in millions.

Overall

, it is evident that all the groups except for the third and the fourth

group

of

households

($50,000-$74,999 and $75,000-$99,000) slightly changed. The

group

that has under $25,000 annual income accounted for nearly 25

million

in 2007, slightly lower than the figures in 2011 and 2015, which is about 27

million

.

In addition

, the second

group

($25,000-$49,000) has the same trend as the first one, except that the data in 2011 closely reached 30.

Moreover

, the third

group

remained steady at about 21

million

in the years given. Meanwhile,

households

having $75,000-$99,999 annually

leveled

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levelled

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off at nearly 15

million

in the years 2007, 2011, and 2015, respectively. As for the

households

holding above $100,000 annual revenues, it slightly fell to about 27

million

in 2011 from nearly 29.5 in 2007, after that, in 2015, the number climbed marginally to 33

million

.