Gun law strictness------------------------------------------->
This is not "my" data, it is straight from the FBI.
Why do you exclude accidents? There is no sound reason to do so.
Furthermore, your choice of graphing methods leaves a lot to be desired. Or do you just find it challenging to put together a graph that is more usable?
As for correlation in the direction you obviously desire, only the green stands out. That stands for gun crime. Obviously, when the rules are more strict, gun crime will rise simply because stricter rules mean something is a crime when otherwise it would not be in a less strict environment. So the green data is sketchy as well.