The bar chart represents the US number of households by their yearly income between 2007, 2011, 2015.
Overall, it is clear that almost in all periods given annual income of the US households comprised $100,000 or above, while the least income comprised $75,000-$99,999. Only income of $50,000-$74,999 remained unchanged within all three periods.
To begin with, in 2007, annual income of less than $25,000 and $25,000-$49,999 had a small difference of approximately 2 million households, comprising 25 and about 27 million households respectively. Four years later, the number of households of both slightly increased, reaching their peak at about 27 and 30 million respectively. In 2015, both rates of households marginally declined,both being at around 27 million. Likewise, annual income of $50,000-$74,999 and $75,000-$99,999 showed the same pattern of the trend. The year 2011, was a peak in households, adding up to just under 30 million. The income of $75,000-$99,999 had a stable number of households in all periods, comprising over 20 million.
On the other hand, the yearly rate of income of $100,000 or more showed a different pattern. In 2007,the number of households added to under 30. 4 years later, it was around 27 million.
Last period the number of households in the US peaked at over 30 million.