The chart give information about families yearly income in the United States during 2007 , 2011 and 2015.
Overall, households with 75-99 thousand and 50-74 thousand dollars income remained relatively the same during all three periods ,On the other hand people who earn 100 thousand increased in 2015 , with a slight rise for homes making less than 25 thousand in 2011 which was the same as households that make 25-49 thousand a year.
In 2007 making 100 thousand dollars was at 29 million which decreased in the following 4 years to 25 million households , but more people got involved in after another 4 years period , As for workers who earn 75-99 thousand and 50-74 thousand dollars it kept a relatively steady numbers at 20 million for 50-74 thousand earners and approximately 15 million for 75-99 thousand earners , While an approximately 5 million increase in households that make 25-49 thousand occurred in 2011 witch declined to 27 million per year in 2015 , Moreover it was a rise from 25 million to 27 million in 2011 for people making less than 25 thousand which decreased slightly in 2015 to reach 26 million annually.