TWRA doesn't track hunter participation so it's impossible to know.What you don't have in your chart are the number of hunters taking part in 2006 versus now. If that's identical then you got something. I would be willing to bet there are lots more turkey hunters now than in 2006. I would also bet there are less turkeys in most parts of the state now than in 2006. If so we are killing the same amount of turkeys with less available because of more people hunting? So without knowing how many people actually turkey hunted I don't think you can conclude anything about impact of tactics or whatever, except harvest numbers are about the same in 2006 and now
What the data does seem to indicate is that the fanning isn't taking out more of the adult population in the first 2 weeks like has been claimed. (And not just here)