Don't Call Me Shirley - thanks, yes I do know what 'non-fatal' means. The original phrase used was victims of guns I think, which can reasonably include aggressive non-fatal injuries although perhaps accidental injuries are slightly more questionable to categorise in this way.
I got the figures from this web-site http://www.factcheck.org/2012/12/gun-rhetoric-vs-gun-facts/.
Not sure why they use different years (perhaps most recent figures?) but in the spirit of honesty I pointed out that they were not all the same year. I shouldn't think it makes much difference though as I wouldn't imagine that the figures would vary hugely year on year, so it seems that there are typically of the order of 85,000 people a year injured or killed by guns in the US.
That's it really - I'm not commenting on gun control or how these statistics should or should not be used in an argument.