the chart below shows the number of houesholds in the us by thier annual income in 2007 , 2011 and 2015

The bar graph illustrates how many families there were in the United States by their yearly income in three years. 2007, 2011 and 2015.

Overall

, the number of households with every range of income increased over the period. The figure for $100,000 or more had the maximum numbers and ranked

first,

while

that for $75,000-$99,999 remained as the minimum, ranking

last

in all three years.

Initially

, figures for less than $25,000 and $25,000-$49,999 were 25 million (25M) and 27M, respectively. After they saw an increase to almost 30M, there was a minimal decrease of 2M for both. $50,000-$74,999 and $75,000-$99,999 were 20M and 15M, respectively in the first year.

Although

there was no change for the former in 2011 and 2015, the latter experienced a low at 14M and marginally grew to 15M. $100,000 or more stood nearly at 30M in 2007 and showed a decline of 2M, followed by a substantial rise to 33M.