What this data set doesn't tell us unfortunately, is a statistic on player skill/experience and frequency of play.
My supposition is that the longer you play, with safety in mind the less likely you are to be injured in anything that might be considered the fault of the player (I.E. diving poorly, not using barrel bags, over extending ones self, sprains and strains or injuries of that sort).
I don't think there is a way to quantify that.