The provided bar chart illustrates the distribution of households in the United States categorized by their annual income in the years 2007, 2011, and 2015.
Overall, the chart portrays five income brackets ranging from less than $25,000 to $100,000 or more. The data reveals relatively stable figures for the number of households across the income categories over the three-year period.
The analysis shows that households earning less than $25,000 annually accounted for 20-25 million households in 2007, 2011, and 2015. Similarly, those with an income of $25,000-$49,999 maintained a steady figure of around 25-30 million households over the same years. The highest number of households was consistently recorded in the less than $25,000 and $100,000 or more income brackets, ranging between 29-35 million houses in 2007 and 2015, with a dip to approximately 27 million houses in 2011. Conversely, the category with the lowest number of houses belonged to the $75,000-$99,999 income group, with around 15 million households held across the three years.
In conclusion, households with an annual income of $100,000 or more consistently dominated in terms of the total number of houses held, while those earning between $75,000-$99,999 possessed the fewest number of houses among the income groups.