Yeah, it's easy to lose sight of the fact that we'll have had fifteen books and two anthologies (17 books total) in 18 years and 2 months once BC comes out. Not to mention 6 original comic book stories, 6 Alera books, 1 Spiderman book, and 1 Spires book, for a grand total of 31 major releases from Butcher in that time. Which averages to a release every 7 months.
That doesn't even count the anthology he edited, which was likely time consuming and required significant effort, or the contributions to the show, RPGs and card game.