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 provided graph illustrates the average salary yearly and the distribution of families in the US by 2007, 2011 and 2015.

Overall

, it was obvious that over $100,000 took the lead among others, except for the year 2011

while

$75,000 and $99,999 remained the lowest point continually. To be more specific, the number of individuals who

gained

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exceed

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exceeded

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10

million

fluctuated moderately, starting at about 29 and

then

dropped

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dropping

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to 27 before increasing to almost 33

million

in 2015.

Moreover

, there was only a little change between $75,000 and $99,999 which declined to 13

initially

but rose to 15

million

eventually;

furthermore

, families who belong to the $50,000 and $74,999 interval witnessed a steady levelling out at nearly 21

million

in each year. In terms of $25,000 to $49,999,

beginning

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from 26

million

households in 2007, followed by a significant growth of 29

million

took place in 2011;

however

, it reduced to 28

million

slightly.

Finally

, people live

in

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on

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less than $25000, a prominent boom happened in 2011, soaring to approximately 4

million

; unfortunately, it fell to around 27

million

by 2015.