The diagram illustrates the quantity of households in the US by their yearly wages in 2007, 2011 and 2015. In general, The number of house owners with the highest income stands dominant, also, quantity of people with low and semi-low wages stays high during this time period
Firstly, families with the largest income (over 100 thousands) stays the highest in 2007 and 2015, with the number of fa about 30 million of people for former and 33 millions for latter. However, there was a slight decline between these periods (in 2011) with the number of 28 millions.
However, number of American families who earns less than 50000 was around 26 millions, raised up to nearly 30 and went down to 28,5 millions in 2007, 2011 and 2015 respectively. The same stability had house owners with lower than 25000 dollars, with the quantity of 25 million in first year, 28 millions for the second and nearly 26 millions for the third year. This makes a huge contrast from average families with the 50 000 to 75000 and 75000 to 100000, having a nearly stable number of 20-21 millions of people for the former and 15 millions for all of the given years for latter.