10 years ago my guy. 10years is a long time for nails to grow ash
But some nails after being injured don't heal until you uproot The whole nail again. My Dad has one such nail that's been in the same situation from last 20 years. In our language we call it "the nail died". It's more like the skin under the nail is injured so the discoloration
good story with only one grievance, what was up with the nails??? it bothered me the whole time