This is hard to answer but I have always read books. I got my library card when I was 6, it was even one of those old paper ones until they library upgraded a few years later. I think I must of favored picture books or other quick reads because by the time I was 8ish my mother made a rule for me that I could only check out chapter books from the library(including the schools library) so this lead to countless books and series such as Nancy Drew, Baby Sitters club, Hardy Boys, BoxCar Children; I really liked series and mysteries, but I remember reading stand alone books as well like the Egyptian Game.
By the time I was it was Goosebumps and Sweet Valley (twins/high/ect.) because I think my mom thought goosebumps was too boyish so she got me some "girly" books. But in her favor she also started getting me the classics like Black Beauty, Little Woman, Moby d**k ( I think my dad actually bought that one) Anne of Green Gables....it goes on.
By the time I was 12-13 though my genre love was set in stone to fantasy. By then I had read books such as the Chronicles of Narnia, The Hobbit, and many others. It was also at this age that I too discovered Anne McCaffery and Pern. And even after typing all this I still can't answer your question sweatdrop