
Half-Blood Prince is a subtheme of Harry Potter that consists of 4 sets that ran from 2010 to 2024. Most sets were released in 2020 which accounted for 2 sets. As of today, the average annual growth of sets in Harry Potter Half-Blood Prince is approximately 5.6% per year.
Harry Potter and the Half-Blood Prince is based on the 6th installment of the Harry Potter series. It was released in 2010 and only contained one set, The Burrow, home of the Weasleys.