IELTS Academic Writing Task 1: You should spend about 20 minutes on this task. The chart below shows the number of households in the US by their annual income in 2007, 2011 and 2015. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The bar chart compares the number of households in the United States, measured in millions, across five annual income categories in 2007, 2011 and 2015. Overall, households earning $100,000 or more recorded the highest figures by 2015 and showed the greatest increase over the period. In contrast, the numbers of households in the middle-income groups […]