According to LifeZette:
Last year, 90,000 Christians were killed for their faith, according to renowned author and sociologist Massimo Introvigne. As the founder of the Independent Center for Studies on New Religions in Turin, Italy, Introvigne spoke of a study that will be published next month through the Center for Study of Global Christianity at Gordon-Conwell Theological Seminary.
This research sheds light on the now undisputed fact that Christians are the most persecuted religious group in the world. Introvigne also reported that, shockingly, 2016 was a better year for Christians than 2015, when 105,000 Christians were killed around the world.