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 compares the figures for

families

in various stages of income in the United States in three separate years.

Overall

, the households who earn $50000 - $74999 per year and $75000 - $99999 per year were far less than the number of the other kinds of

families

while

the figure for

families

earning less than $25000 was consistently lower than that for

families

earning between $25000 and $49999 and they remained a slight gap over the 8-year period.

Firstly

, the lowest numbers of

families

(earned $75000-$99999) got a slight decline from 14

million

in 2007 to 13

million

in 2011, and grew to reach 15

million

over the next 4 years.

However

, the second lowest income stage of

families

(earned $50000- $74999) remained stable at around 21

million

between 2007 and 2015. The two types of households that earned less than $49999 had seen a similar trend during the 8-year period.

Families

earned less than $25000 grew to reach from just over 25

million

in 2007 to 28

million

in 2011

while

another type of household increased from 26

million

to just under 30

million

at the same time, followed by a slight decline( 1

million

for both) by 2015.

In addition

, the figure for those homes who gain a salary of more than 100000 per year was consistently just less than 30

million

,

however

, it peaked at 33

million

by 2015 which was the largest group of total

families

.