This is really a straw man. You're making an argument against gun control being 100 percent effective, which is something obvious. The point here is that controls can impact the level of gun use in crimes.
What all your statistics overlook is that criminals will still exist, and will continue to commit crimes. Obviously, if you remove ALL guns from a society, there can't be any "gun violence" or deaths by gun. But there WILL still be deaths by crime, only the weapons will change. So will the tools of suicide.
Example: my daughter currently lives in Chile, which has pretty tight gun laws. Over the past two years she has made eight attempts to commit suicide. The method of choice in seven was drug overdose -- the eighth was an attempt to emulate Superman and leap from a tall building without a parachute.
Look what happened in England when they tightened up their gun laws. The incidence rate of "hot" burglaries ( translation: a "hot" burglary is one committed when the home is occupied -- we call it "home invasion") skyrocketed, because the goblins could be fairly well assured that the occupants were defenseless.