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.

The bar chart illustrates the comparison between the amount of domestic helpers in the US by their annual earnings for 8

years

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.

Overall

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, it can be seen that four level

income

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categories fluctuated, and one of them was steady.

First,

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the people earning less than $25,000 and $25,000 - $49,999 were unstable, which increased in the first four

years

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but decreased slightly in the following

years

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.

In contrast

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, the households

who

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that

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had

income

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of around $75,000 - $99,999 had increased in the second four

years

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.

On the other hand

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, about 20 million people from 2007 to 2015 have earned steadily $50,000 - $74,999. Interestingly, in 2015, the number of households with

income

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equal to or more than $100,000 has increased dramatically to over 30 million people

To sum up

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, in whole categories by annual

income

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, there were under 30 million households in the US.

Whereas

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, in 2015 there was an improvement in one of the salary categories.