REALLY hard to peel off the backing

They switched to individual stickers from the pages of stickers. Which is fine, except that they are extremely difficult to peel off the backing. I have fingernails and it was impossible. After fighting with a couple of them for 10 minutes, I got a sharp knife to get them started. A tab of some sort would have made the job easier. Thank heavens I didn't have to do all 60 of them at once.