Band 7+: Task 1: The chart below shows the number of households in the US by their annual income in 2007, 2011 and 2015. Summarize the information by selecting and reporting the main features and make comparisons where relevant. Write at least 150 words.

The given bar chart depicts data about the number of families in the United States by their yearly salary in three periods: 2007, 2011, and 2015.

Overall, the number of households earning less than $25,000 increased slightly over the period, while those with higher annual wages over $100,000 showed a gradual increase.

According to the bar chart, the figures for incomes less than $25,000 and $25,000-$49,000 had similar results, with differences of 2-4 million families over the given period. These figures started with 25 million and approximately 23 million, and both ended at around 23-25 million. The number of wages $50,000-$74,999, however, showed a period of stability, at more than 20 million households.

In contrast, the number of families with the lowest salary accounting for $75,000-$99,999 over the period; the amount did not remain above 15 million. Meanwhile, the income of $100,000 or more was the highest in the three periods, beginning with 25 million domestic units and ending at less than 35 million.