That illustrates levels m43s ownership or use? Or, lacking that, is there a source of information from which a map could be created? I'm thinking of something with some level of detail in it; something with more than mere levels of national/global penetration. For instance, I live in Springfield, Illinois, USA. I would find it interesting to know how my Central Illinois region stacks up in m43s ownership and use compared to, say, South Eastern Pennsylvania. I don't have any commercial use for this info in mind, just curious. I like maps and such. So I wouldn't be inclined to be willing to pay for such information.