Where can I find data on book sales?

Hello there, I'm interested in acquiring some information on book sales. I'm particularly looking for detailed data sets that can give me insights into sales trends, popular genres, and author rankings. Do you happen to know where I could potentially find such data? It would be immensely helpful if you could guide me towards a reliable source. Perhaps there's a government agency, industry association, or research firm that specializes in collecting and publishing this kind of information? Thank you in advance for your assistance.