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

The bar chart compares information about how much money each American family in

million

annually earned over an 8-year period in the years 2007, 2011 and 1015.

It is clear that

, over the period shown, the population of families gaining less than 25,000 to 49,999

dollars

rose in the first four years and

then

fell back over the

last

years. The opposite trend can be seen for salaries above 100,000

dollars

. In 2007, the highest figure belonged to people whose monetary outcomes were 100,000

dollars

and higher with close to 30

million

which was twice as high as the figure for those with a wage of 75,000 to 99,999

dollars

.

Subsequently

, these two figures had an

overall

increase reaching about 33 and 15

million

households respectively in 2015. In the first year, around 25

million

Americans earned less than 49,999

dollars

which rose by nearly 5

million

in 2011 and

then

a fall of half of

this

amount followed in the final year.

Furthermore

, the only stable figure was for families with a salary of 50,000 to 74,000

dollars

which contained just over 20

million

of the USA residents.