While I try and find a working version, here is the gist of it:
Columns from left to right:
Firearms per 100 people; Firearms homicides per 100,000 people; Total Percentage of homicides by firearms out of total homicides; Total number of firearms homicides.
For reference, the top most row is the US. The data rows are ordered by number of firearms per 100 people. The further down you get, the less legal guns there are in the hands of citizens.
US numbers:
88.8 firearms per 100 people; 2.97 homicides by gun per 100,000; 60% homicides are by gun; 10,129 total homicides by gun.
For reference:
The huge black blob about halfway down is Brazil with 8 guns per 100 people (very strict gun control there); 18.1 homicides per 100,000; 70.8% of all murders done with a gun; 34,678 homicides by gun
The data is a cumulative from census bureaus, WHO, Police dept. data etc.
Of course, I will find and post a working pic, but the people who are anti-gun will ignore the data anyway or rationalize it away some how. That is pretty typical.