The bar chart illustrates how the number of US households, categorized by their yearly income, changed in the years 2007, 2011 and 2015. Overall, across 8 years, households earning less than $50,000 showed an initial increase, followed by a slight decrease. In contrast, households with incomes exceeding $75,000 witnessed a minimal decline before rebounding, with those making $75,000-99,999 a year consistently having the lowest figures. At the same time, households with mid-level incomes remained stable over the period shown.
Regarding households with incomes below $50,000, 25 million had an annual income of under $25,000 initially, after which it had risen to a high of close to 30 million by 2011, prior to falling marginally to around 27 million in the final year. Households who made between $25,000 and $49,999 yearly mirrored this trend, albeit at a higher rate, starting at approximately 26 million, peaking at exactly 30 million, then ending at around 29 million.
Meanwhile, households falling within the income range of $50,000-$74,999 were the only category that witnessed no changes, with their figure staying unchanged at just over 20 million throughout.
In terms of households with annual earnings of above $75.000, there were nearly 15 million earning $75,000-99,999 in 2007, but it later climbed to precisely 15 million at the end of the timeframe despite a negligible dip in 2011. Similar changes, but to a much greater extent, were observed in the figure for households with the largest income range ($100,000 or more), growing from just under 30 million to roughly 33 million to dominate the chart in 2015.