The New York Times Best Seller List of books has been the United States' leading list for best selling books for over 50 Years. The weekly best seller list has been running in the New York Times Newspaper since 1942. The editors of the "News Surveys" department of the NYT create the list based upon weekly sales reports from certain bookstores and wholesalers across the country.
But now, in the year for which we have the most recent data, over 61% of the top 31 best selling books are written for, published and marketed to adolescents and young adults between the ages of 12 to 21. These books include: all three entries in The Hunger Games trilogy, all five books in the Twilight series, six books in the mythologically-based Percy Jackson series, five books in the Diary of a Wimpy Kid series and one stand alone novel.