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.

Given is a bar chart concerning family

income

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. It provides a comparison of the US

families

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' yearly

income

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in 2007, 2011 and 2015. Apparent is the fact that households of the highest and lowest levels of

income

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experienced

such

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a

Correct article usage

apply

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considerable growth. From 25

million

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in 2007, the

number

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of

families

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receiving a minimum salary of 25000 dollars annually, reached 28

million

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in 2015.

Similarly

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, having a negligible drop in 2011, the

number

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of wealthiest

families

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or earners of more than 100000 dollars yearly soared from 29

million

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in 2007 to 33

million

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families

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in 2015. In stark contrast,

however

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, remained virtually stable during the period in question, the US

families

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with moderate levels of

income

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.

To sum up

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,

while

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, the

number

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of richest

families

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and

also

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the poorest ones experienced an upward trend the

number

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of

families

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with moderate

income

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saw negligible changes in the United States.