The line graph illustrate number of U.S. households by annual income. Started in 2007 to2011 and finished in 2015. Units are measured in millions.
Overall there are five different prices from 2007 to 2015. In fact, 50,000-74,999 and 75,000-99,999 dollars stay constant during 8 years and shows around 20 and 15 millions of households.
On the one hand, less than 25,000 dollars shows 25 million of households in 2007 and slowly increased in 2011 when was peaked at around 30 millions, but after peaked, statistic had reduced last year. Additionally, 25,000-49,999 dollars started in 2007 at around 25 millions and had increased during 8 years, this statistic also was peaked in 2011 at 30 millions.
On the other hand, statistic about 100,000 dollars or more it is special, because this statistic most had increased then other statistics in the line graph. In 2007 shows 30 millions , but after 4 years, statistic had reduced to 25 millions and last year was peaked at around 35 millions.