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

The bar chart gives information about how many American

families

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with their yearly salaries in the years 2007, 2011 and 2015.

Overall

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, the

income

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groups below $49,999 and above $75,000 experienced a rising trend and had some fluctuations,

while

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the

income

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group

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between $50,000 and $74,999 remained steady. In 2007, the number of

families

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which earned over $100,000 were the largest, after four years, those

families

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who received between $25,000 and $49,999 outraced it and became the biggest one.

However

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, the highest

income

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group

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turned into the largest one again. The

families

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who earned less than $49,000 showed a considerable increase. By 2007, there were 25

million

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families

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earning under $25,000 slightly fewer than the 27

million

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households receiving from $25,000 to $49,999. By the year 2015, both categories grew gradually, with approximately 28

million

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households in each

group

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.

In contrast

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, the number of households whose

income

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was between $50,000 and $99,999 was lower. These figures had a tiny change, which was under one

million

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. The highest

income

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group

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with over $100,000 had the most significant change. During the period from 2007 to 2011, it went down to just under 30

million

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. After that, it rose to about 33

million

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.