Between the start of 2009 and the start of 2014, each of these series appeared over 50 times in the New York Times' list of the 10 top-selling children's series.

Picture books have been excluded from the list of best selling series since May 2009. Note also that some series—such as The Hunger Games—are not initially classified as series, and may therefore make a late entry to the list.

Click here to see the latest New York Times lists of Best Sellers