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

The bar graph illustrates the

number

of American households

according to

their annual salary in 2007, 2011, and 2015. One notable thing is that

two

groups

whose annual income didn’t exceed 50

millions

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million

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dollars

totaled over 50

million

in 2007, with figures

25

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of 25

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million

dollars

and roughly 28

million

dollars

, respectively. Meanwhile, it is obvious that the richest group showed the highest

number

with

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reaching almost 30

million

. It is

also

easy to observe that the

two

lowest salary

groups

had an increase in the population in 2011.

On the other hand

, there was

an

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a

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dwindling

number

of the richest person.

However

, the total population of the

two

groups

(less than 49

million

dollars

) slightly decreased,

while

the figure of the group who earned the money

the

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most surged to 33

million

dollars

in 2015. In comparison,

two

middle salary

groups

(between 50

million

and 99

million

dollars

) remained the fourth and fifth throughout the period and there were not any big differences in

number

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a number

the number

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of the population.

Overall

, the data clearly shows that the richest and the most poor

housholds

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households

accounted for the majority in 2007, 2011, and 2015.