I know a guy at work who was robbed at an ATM and shot several years ago. You really can't tell it by looking at him, but he says he's never been the same at all. He's on disability, though he works limited hours making pizza. He can't lift much of anything or do hard work.
Also agree with RockBottom about the improvements in medical and emergency care. Location is also important. Living near a hospital will help your odds considerably, living in the sticks where cops and ambulances don't come to....well. My dad wouldn't have survived his heart attack if my parents didn't live in Little Rock.
Course, I also know this other guy. I haven't heard any stories of being "shot" specifically, but he's been patched up a hundred times. Wires in his cheak bone, eyeball put back into it's socket, knee blown apart, patched up in third world countries, broke his back twice......nothin slows him down! Some people are just really hard to kill.