Roll the dice and Chills, there are statistics in every thing . When I had my Train shop, I had access to trade publications, that listed demographics , trends ,, ect. and did it without a computer or the internet , To day with a computer you should be able to access the information. You cand also pick up a model railroader from the 90's and a current issue , and compare the amount of advertising , and the list of listed Hobby shops , then and now , and I think you will see the trend!
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