Currently my company is working on trying to find the total search volume (read: search potential) for our industry, but aren't sure how best to go about it. Obviously GWT data and Keyword Planner data came to mind, but those are not all encompassing (at least we don't think they are) -- GWT only has data for terms you rank for and the Keyword Planner only gives you volume if you already know the queries. Is there some quick and easy way to go about finding this that we haven't thought of? One thing to note is that our business is nationwide, meaning that all our terms will have a geo-identifier associated with them for each location i.e. [city] + search term -- this just makes things even more complicated. Any advice on to approach would be much appreciated!