The chart below shows the number of households in the US by their annual income in 2007, 2022 and 2015. Summarise the information by selecting and reporting the main features and make comparisons where relevant.

The provided statistical chart illustrates the population of households residing in the United States, divided with respect to their yearly income in different time frames. Overall, the main participants of the competition have been those with salaries of below $25,000, between $25,000 and $49,999, and $100,000 or more, having stayed as the most populated classes […]