What genre did people read most in 2014?

Apple has released a list of the best-selling paid fictionebook titles in iBookstore in 2014. Other sellers will be revealing their own lists shortly. 

Fiction (paid):

1. The Fault in Our Stars, John Green (Children & Teens)
2. Gone Girl, Gillian Flynn (Mysteries & Thrillers)
3. Insurgent, Veronica Roth (Children & Teens)
4. Allegiant, Veronica Roth (Children & Teens)
5. Divergent, Veronica Roth (Children & Teens)
6. The Goldfinch, Donna Tartt (Fiction & Literature)
7. The Target, David Baldacci (Mysteries & Thrillers)
8. The Invention of Wings, Sue Monk Kidd (Fiction & Literature)
9. The Husband's Secret, Liane Moriarty (Fiction & Literature)
10. Fifty Shades of Grey, E L James (Romance)
11. The A Song of Ice and Fire Series, George R. R. Martin (Sci-Fi & Fantasy)
12. If I Stay, Gayle Forman (Children & Teens)
13. Personal, Lee Child (Mysteries & Thrillers)
14. Sycamore Row, John Grisham (Mysteries & Thrillers)
15. Fifty Shades Darker, E L James (Romance)
16. Unlucky 13, Maxine Paetro,James Patterson (Mysteries & Thrillers)
17. The Silkworm, Robert Galbraith (Mysteries & Thrillers)
18. The Maze Runner, James Dashner (Children & Teens)
19. The Heist, Daniel Silva (Mysteries & Thrillers)
20. Fifty Shades Freed, E L James (Romance)
21. Big Little Lies, Liane Moriarty (Fiction & Literature)
22. Missing You, Harlan Coben (Fiction & Literature)
23. Act of War, Brad Thor (Fiction & Literature)
24. Field of Prey, John Sandford (Mysteries & Thrillers)
25. Top Secret Twenty-One, Janet Evanovich (Mysteries & Thrillers)

In terms of genres, it's no contest: mysteries and thrillers win handily. Romance is in second place. In children's and teen's, it's dystopian adventure--although I've read that this may have run its course.