The usual disclaimer-y preface applies. Books with hardcover domestic print sales over 100K were included in PW's list; publishers were asked to take returns into account through 2/15, but these figures weren't often available at the time.
Here are the historical novels that made it on the list. See also my previous posts on this topic from 2011, 2010, 2009, 2008 and 2007.
Among the top 15, there's only one historical novel:
#7 Ken Follett, Winter of the World, at 400,000+ copies.
Other mega-popular titles: J.K. Rowling's The Casual Vacancy was at #1 with 1.3 million copies sold. We also have the usual suspects like James Patterson and John Grisham, plus other mysteries and thrillers, including Gillian Flynn's Gone Girl at #3.
Other historical novels with 100K+ hardcover copies sold, in descending order of sales:
Deborah Harkness, Shadow of Night (at 170,000+ copies)
Hilary Mantel, Bring Up the Bodies
Dennis Lehane, Live By Night
Amor Towles, Rules of Civility
Ayana Mathis, The Twelve Tribes of Hattie
M.L. Stedman, The Light Between Oceans
Clive Cussler and Justin Scott, The Thief: An Isaac Bell Adventure
Ian McEwan, Sweet Tooth
Jeffrey Archer, Sins of the Father
Christopher Moore, Sacre Bleu
Most of these are continuing volumes in popular series, or new releases from previously bestselling authors. PW notes that Rules of Civility and The Light Between Oceans are debut novels with "glowing reviews and impressive sales." So is Twelve Tribes of Hattie, which was also, of course, an Oprah book club pick; note also that it came out on December 6th, so we may see it on next year's list, too. Sweet Tooth is set in 1972, so not everyone will call it historical fiction, but it was promoted as such by the publisher.
Which ones have you read? Alas, for me, only Winter of the World so far... my review is here.
Looking at the paperback bestsellers, George R.R. Martin dominates the mass market list, and no historicals are listed in this short section. Mass market isn't a popular format for the genre. Among trade paperbacks, we have Seth Grahame-Smith's Abraham Lincoln: Vampire Hunter at 300K+ copies, then Erin Morgenstern's The Night Circus, Paula McLain's The Paris Wife, Daisy Goodwin's The American Heiress, Kathleen Grissom's The Kitchen House (wonderful book; so glad to see this one succeed), The Dovekeepers, Rules of Civility again, in its pb edition, and a few more. PW observes that the Fifty Shades books sold over 29 million copies (yes, 29 million copies) in trade paper, and over 15 million as e-books. Nothing else comes close.
For e-book sales among historicals: Stephen King's 11/22/63 and Kathryn Stockett's The Help are high up there with 400K+ copies apiece, plus some familiar faces: longtime book club favorite Water for Elephants, that vampire hunter again, Ken Follett, M.L. Stedman, and many other titles from the print lists.