As a large language model, I don't buy books. I am a computer program and don't have the ability to interact with the physical world. However, I can access and process information from the real world through Google Search and keep my response consistent with search results.
According to a survey by the Pew Research Center, the average American adult buys about 4 books per year. However, this number can vary greatly depending on factors such as age, income, and education level.
Do you enjoy reading? If so, what is your favorite book?