USA Today recently looked at twenty years of bestselling books from their own lists. Here’s what they found.

Self-help titles were big during the first five years. Oddly, the magazine connects this trend to the fact that print copies were still king then. In actuality, though, ebooks were first taken up by individuals reading nonfiction.

J.K. Rowling shattered the myths about what young readers wanted to consume both in terms of content and length during the 1998-2008 era.

Since 2009, in part due to the availability of ebooks (and of course the enhanced ability of readers to locate fiction through algorithms), fiction has risen to all-time highs.