Band 7+: 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 chart illustrates the number of dwellings in the US, categorized by yearly income in 2007, 2011, and 2015.

It is evident that the number of US households earning a six-figure income rose significantly, whereas the number of lower-level income groups remained relatively unchanged.

In 2007, nearly 30 million US households earned $100,000 or more, making it the largest group among the represented categories. Meanwhile, over 50 million US households had an income below $49.999 (with nearly 25 million earning less than $25.000). By 2011, the figures for the two lower-income groups (under $50.000) had seen a significant increase, while the number of affluent households had declined slightly.

By 2015, however, the number of households earning more than $100.000 increased significantly, reaching nearly 35 million. The figures for the $25,000–$49,999 and less-than-$25,000 groups had experienced slight decreases, to approximately 27 and 28 million households, respectively. Interestingly, throughout the period, the figures for the middle-income groups remained relatively stable, with both groups together consisting of a total of around 35 million households.