How bad did humans destroy the Ozone during the 20th century?

Well they blamed it on CFCs and they banned CFCs and said that once CFCs were banned, the hole would repair itself, but now it's two decades later and the ozone hole is bigger than it was at the time. The explanation is that well CFCs were even worse than we'd thought and it will take fifty years for the ozone hole to repair itself but it sounds very Orwellian.