The Year in Bestsellers

In 2015, an unusual event occurred in the world of bestsellers: a new category dominated the charts. For the first time, adult coloring books were the most successful players on the trade paperback lists. Four are among the longest-running bestsellers of the year, and 21 adult coloring books landed on the trade list in the course of 2015. The 21 coloring books spent a combined total of 175 weeks on the bestsellers lists; that accounts for 13.5% of the total positions on the trade paper bestseller lists for the year.