The bar graph illustrates the number of households in the United States categorized by their annual salary for the years 2007, 2011, and 2015.
Overall, the total number of households increased from 2007 to 2015. The largest group of households consisted of individuals earning $100,000 or more, while the smallest group comprised those earning between $75,000 and $99,999.
In 2007, there were 25 million households with incomes below $25,000, which slightly increased to approximately 28 million in 2011 and remained the same in 2015. For households earning between $25,000 and $49,999, this number rose from around 26 million to just under 30 million by 2011, although it experienced a slight decline in 2015.
For those earning between $50,000 and $74,999, the number of households remained stable over these years, at just over 20 million. Similarly, the number of households in the $75,000 to $99,999 income bracket remained approximately 15 million throughout the examined years.
The number of households for individuals earning $100,000 or more exhibited fluctuations, starting at around 30 million in 2007, slightly declining in 2011, and then dramatically increasing to about 33 million in 2015.