The bar chart illustrates the distribution of households in the United States according to their annual income across three distinct years: 2007, 2011, and 2015.
Overall, it is evident that the segment of households earning $100,000 or more experienced significant growth, while the majority of lower-income categories witnessed fluctuations and a general decline towards 2015.
In 2007, the income bracket of $100,000 or more was represented by nearly 30 million households, the highest figure recorded for that year. This number experienced a minor decline in 2011 but rebounded impressively to reach approximately 33 million households by 2015. Conversely, the income categories of less than $25,000 and $25,000-$49,999 ranked second and third respectively, with 27 million and 25 million households in 2007. These figures exhibited a similar trajectory with an increase to 30 million and 28 million households in 2011, before declining once again to 29 million and 27 million households in 2015.
The remaining income categories of $50,000-$74,999 and $75,000-$99,999 were the least represented, with figures around 21 million and under 15 million households in 2007. Over the years, these segments displayed relative stability, maintaining their numbers at 21 million and 15 million households by 2015. Notably, while the higher-income bracket showed robust growth, the lower to middle-income ranges faced challenges, indicating a diverging trend within the income distribution landscape.