By Robert Royal, The Catholic Thing - That number does not include the number of babies killed by elective abortions, however, which at one time would have been thought a rare, emergency measure. The Guttmacher Institute, an advocate for abortion, estimates that there are roughly 56 million abortions around the world every year. So allowing for the statistical uncertainties, we can say in broad terms that as many innocents are slaughtered every year in the womb as there are deaths from all other causes in the entire world.